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10253131 = 71464733
BaseRepresentation
bin100111000111…
…001101001011
3201021220122121
4213013031023
510111100011
61003432111
7153102340
oct47071513
921256577
1010253131
115873369
123525637
13217cb55
14150c7c7
15d77e71
hex9c734b

10253131 has 4 divisors (see below), whose sum is σ = 11717872. Its totient is φ = 8788392.

The previous prime is 10253053. The next prime is 10253149. The reversal of 10253131 is 13135201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13135201 = 23954959.

It is a cyclic number.

It is not a de Polignac number, because 10253131 - 211 = 10251083 is a prime.

It is a super-3 number, since 3×102531313 (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10253161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 732360 + ... + 732373.

It is an arithmetic number, because the mean of its divisors is an integer number (2929468).

Almost surely, 210253131 is an apocalyptic number.

10253131 is a deficient number, since it is larger than the sum of its proper divisors (1464741).

10253131 is an equidigital number, since it uses as much as digits as its factorization.

10253131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464740.

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

The square root of 10253131 is about 3202.0510614292. The cubic root of 10253131 is about 217.2461900392.

Adding to 10253131 its reverse (13135201), we get a palindrome (23388332).

The spelling of 10253131 in words is "ten million, two hundred fifty-three thousand, one hundred thirty-one".

Divisors: 1 7 1464733 10253131