102431331 has 8 divisors (see below), whose sum is σ = 151750160. Its totient is φ = 68287536.

The previous prime is 102431327. The next prime is 102431359. The reversal of 102431331 is 133134201.

It is not a de Polignac number, because 102431331 - 2² = 102431327 is a prime.

It is a super-2 number, since 2×102431331² = 20984355140863122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102431311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1896850 + ... + 1896903.

It is an arithmetic number, because the mean of its divisors is an integer number (18968770).

Almost surely, 2^102431331 is an apocalyptic number.

102431331 is a deficient number, since it is larger than the sum of its proper divisors (49318829).

102431331 is an equidigital number, since it uses as much as digits as its factorization.

102431331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793762 (or 3793756 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 102431331 is about 10120.8364772878. The cubic root of 102431331 is about 467.8905480400.

Adding to 102431331 its reverse (133134201), we get a palindrome (235565532).

The spelling of 102431331 in words is "one hundred two million, four hundred thirty-one thousand, three hundred thirty-one".