131213264 has 80 divisors (see below), whose sum is σ = 315063168. Its totient is φ = 51549696.

The previous prime is 131213261. The next prime is 131213279. The reversal of 131213264 is 462312131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131213261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330314 + ... + 330710.

Almost surely, 2^131213264 is an apocalyptic number.

131213264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131213264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157531584).

131213264 is an abundant number, since it is smaller than the sum of its proper divisors (183849904).

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

131213264 is a wasteful number, since it uses less digits than its factorization.

131213264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 646 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 131213264 is about 11454.8358347032. The cubic root of 131213264 is about 508.1507602224.

Adding to 131213264 its reverse (462312131), we get a palindrome (593525395).

The spelling of 131213264 in words is "one hundred thirty-one million, two hundred thirteen thousand, two hundred sixty-four".