102813731 has 16 divisors (see below), whose sum is σ = 112611840. Its totient is φ = 93532320.

The previous prime is 102813707. The next prime is 102813743. The reversal of 102813731 is 137318201.

It is a cyclic number.

It is not a de Polignac number, because 102813731 - 2¹⁴ = 102797347 is a prime.

It is a super-2 number, since 2×102813731² = 21141326564280722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102813731.

It is not an unprimeable number, because it can be changed into a prime (102813761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48806 + ... + 50868.

It is an arithmetic number, because the mean of its divisors is an integer number (7038240).

Almost surely, 2^102813731 is an apocalyptic number.

102813731 is a deficient number, since it is larger than the sum of its proper divisors (9798109).

102813731 is a wasteful number, since it uses less digits than its factorization.

102813731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 102813731 is about 10139.7105974480. The cubic root of 102813731 is about 468.4720730897.

The spelling of 102813731 in words is "one hundred two million, eight hundred thirteen thousand, seven hundred thirty-one".