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131010031 = 592638443
BaseRepresentation
bin1111100111100…
…00110111101111
3100010111222222101
413303300313233
5232014310111
620555555531
73150365305
oct763606757
9303458871
10131010031
1167a51859
1237a5bba7
13211b0439
1413584275
15b77cbc1
hex7cf0def

131010031 has 8 divisors (see below), whose sum is σ = 133752960. Its totient is φ = 128284632.

The previous prime is 131010013. The next prime is 131010037. The reversal of 131010031 is 130010131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131010031 - 217 = 130878959 is a prime.

It is a super-2 number, since 2×1310100312 = 34327256445241922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131010037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11296 + ... + 19738.

It is an arithmetic number, because the mean of its divisors is an integer number (16719120).

Almost surely, 2131010031 is an apocalyptic number.

131010031 is a deficient number, since it is larger than the sum of its proper divisors (2742929).

131010031 is an equidigital number, since it uses as much as digits as its factorization.

131010031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8765.

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 131010031 is about 11445.9613401409. The cubic root of 131010031 is about 507.8882705796. Note that the first 3 decimals are identical.

Adding to 131010031 its reverse (130010131), we get a palindrome (261020162).

It can be divided in two parts, 1310100 and 31, that added together give a palindrome (1310131).

The spelling of 131010031 in words is "one hundred thirty-one million, ten thousand, thirty-one".

Divisors: 1 59 263 8443 15517 498137 2220509 131010031