102113431 has 8 divisors (see below), whose sum is σ = 117541760. Its totient is φ = 86895288.

The previous prime is 102113383. The next prime is 102113443. The reversal of 102113431 is 134311201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102113431 - 2¹⁷ = 101982359 is a prime.

It is a super-2 number, since 2×102113431² = 20854305581183522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102113131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51501 + ... + 53446.

It is an arithmetic number, because the mean of its divisors is an integer number (14692720).

Almost surely, 2^102113431 is an apocalyptic number.

102113431 is a deficient number, since it is larger than the sum of its proper divisors (15428329).

102113431 is a wasteful number, since it uses less digits than its factorization.

102113431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105093.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 102113431 is about 10105.1190492740. The cubic root of 102113431 is about 467.4060070122.

Adding to 102113431 its reverse (134311201), we get a palindrome (236424632).

The spelling of 102113431 in words is "one hundred two million, one hundred thirteen thousand, four hundred thirty-one".