102031131 has 16 divisors (see below), whose sum is σ = 139677824. Its totient is φ = 66213504.

The previous prime is 102031129. The next prime is 102031147. The reversal of 102031131 is 131130201.

It is not a de Polignac number, because 102031131 - 2¹ = 102031129 is a prime.

It is a super-2 number, since 2×102031131² = 20820703386278322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102031231) 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, 42300 + ... + 44646.

It is an arithmetic number, because the mean of its divisors is an integer number (8729864).

Almost surely, 2^102031131 is an apocalyptic number.

102031131 is a deficient number, since it is larger than the sum of its proper divisors (37646693).

102031131 is a wasteful number, since it uses less digits than its factorization.

102031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 102031131 is about 10101.0460349411. The cubic root of 102031131 is about 467.2804020742.

Adding to 102031131 its reverse (131130201), we get a palindrome (233161332).

The spelling of 102031131 in words is "one hundred two million, thirty-one thousand, one hundred thirty-one".