131213012 has 24 divisors (see below), whose sum is σ = 276239040. Its totient is φ = 53274240.

The previous prime is 131213009. The next prime is 131213029. The reversal of 131213012 is 210312131.

It is a super-2 number, since 2×131213012² = 34433709036224288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122789 + ... + 123852.

It is an arithmetic number, because the mean of its divisors is an integer number (11509960).

Almost surely, 2^131213012 is an apocalyptic number.

It is an amenable number.

131213012 is an abundant number, since it is smaller than the sum of its proper divisors (145026028).

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

131213012 is a wasteful number, since it uses less digits than its factorization.

131213012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246671 (or 246669 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 131213012 is about 11454.8248349767. The cubic root of 131213012 is about 508.1504349147.

Adding to 131213012 its reverse (210312131), we get a palindrome (341525143).

The spelling of 131213012 in words is "one hundred thirty-one million, two hundred thirteen thousand, twelve".