102311031 has 16 divisors (see below), whose sum is σ = 143525088. Its totient is φ = 64742400.

The previous prime is 102311003. The next prime is 102311059. The reversal of 102311031 is 130113201.

It is an interprime number because it is at equal distance from previous prime (102311003) and next prime (102311059).

It is not a de Polignac number, because 102311031 - 2⁹ = 102310519 is a prime.

It is a super-2 number, since 2×102311031² = 20935094128565922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102310998 and 102311016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102310031) 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 15 ways as a sum of consecutive naturals, for example, 6690 + ... + 15791.

It is an arithmetic number, because the mean of its divisors is an integer number (8970318).

Almost surely, 2^102311031 is an apocalyptic number.

102311031 is a deficient number, since it is larger than the sum of its proper divisors (41214057).

102311031 is a wasteful number, since it uses less digits than its factorization.

102311031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22562.

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

The square root of 102311031 is about 10114.8915466257. The cubic root of 102311031 is about 467.7073056597.

Adding to 102311031 its reverse (130113201), we get a palindrome (232424232).

The spelling of 102311031 in words is "one hundred two million, three hundred eleven thousand, thirty-one".