102323431 has 4 divisors (see below), whose sum is σ = 116941072. Its totient is φ = 87705792.

The previous prime is 102323411. The next prime is 102323447. The reversal of 102323431 is 134323201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134323201 = 127 ⋅1057663.

It is a cyclic number.

It is not a de Polignac number, because 102323431 - 2¹⁹ = 101799143 is a prime.

It is a super-2 number, since 2×102323431² = 20940169063223522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102323399 and 102323408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102323401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7308810 + ... + 7308823.

It is an arithmetic number, because the mean of its divisors is an integer number (29235268).

Almost surely, 2^102323431 is an apocalyptic number.

102323431 is a deficient number, since it is larger than the sum of its proper divisors (14617641).

102323431 is an equidigital number, since it uses as much as digits as its factorization.

102323431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14617640.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 102323431 is about 10115.5044856893. The cubic root of 102323431 is about 467.7262001238.

Adding to 102323431 its reverse (134323201), we get a palindrome (236646632).

The spelling of 102323431 in words is "one hundred two million, three hundred twenty-three thousand, four hundred thirty-one".