102340431 has 6 divisors (see below), whose sum is σ = 147825080. Its totient is φ = 68226948.

The previous prime is 102340421. The next prime is 102340457. The reversal of 102340431 is 134043201.

102340431 is a `hidden beast` number, since 1 + 0 + 234 + 0 + 431 = 666.

It is not a de Polignac number, because 102340431 - 2⁶ = 102340367 is a prime.

It is a super-2 number, since 2×102340431² = 20947127634531522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102340421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5685571 + ... + 5685588.

Almost surely, 2^102340431 is an apocalyptic number.

102340431 is a deficient number, since it is larger than the sum of its proper divisors (45484649).

102340431 is a wasteful number, since it uses less digits than its factorization.

102340431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11371165 (or 11371162 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 102340431 is about 10116.3447450154. The cubic root of 102340431 is about 467.7521013438.

Adding to 102340431 its reverse (134043201), we get a palindrome (236383632).

The spelling of 102340431 in words is "one hundred two million, three hundred forty thousand, four hundred thirty-one".