131234502 has 16 divisors (see below), whose sum is σ = 299964672. Its totient is φ = 37495560.

The previous prime is 131234489. The next prime is 131234503. The reversal of 131234502 is 205432131.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131234503) 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, 1562274 + ... + 1562357.

It is an arithmetic number, because the mean of its divisors is an integer number (18747792).

Almost surely, 2^131234502 is an apocalyptic number.

131234502 is an abundant number, since it is smaller than the sum of its proper divisors (168730170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131234502 is a wasteful number, since it uses less digits than its factorization.

131234502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124643.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 131234502 is about 11455.7628292489. The cubic root of 131234502 is about 508.1781749398.

Adding to 131234502 its reverse (205432131), we get a palindrome (336666633).

The spelling of 131234502 in words is "one hundred thirty-one million, two hundred thirty-four thousand, five hundred two".