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151000230031 = 721571461433
BaseRepresentation
bin1000110010100001010…
…0001010100010001111
3112102202110120110112021
42030220110022202033
54433222024330111
6153211334551011
713623632530540
oct2145024124217
9472673513467
10151000230031
1159047769842
1225321808467
131131586a251
14744655c4c7
153ddb808d71
hex232850a88f

151000230031 has 4 divisors (see below), whose sum is σ = 172571691472. Its totient is φ = 129428768592.

The previous prime is 151000230019. The next prime is 151000230037. The reversal of 151000230031 is 130032000151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 151000230031 - 229 = 150463359119 is a prime.

It is a super-2 number, since 2×1510002300312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151000229987 and 151000230014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151000230037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10785730710 + ... + 10785730723.

It is an arithmetic number, because the mean of its divisors is an integer number (43142922868).

Almost surely, 2151000230031 is an apocalyptic number.

151000230031 is a deficient number, since it is larger than the sum of its proper divisors (21571461441).

151000230031 is an equidigital number, since it uses as much as digits as its factorization.

151000230031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21571461440.

The product of its (nonzero) digits is 90, while the sum is 16.

Adding to 151000230031 its reverse (130032000151), we get a palindrome (281032230182).

The spelling of 151000230031 in words is "one hundred fifty-one billion, two hundred thirty thousand, thirty-one".

Divisors: 1 7 21571461433 151000230031