131213000 has 32 divisors (see below), whose sum is σ = 307040760. Its totient is φ = 52484800.

The previous prime is 131212951. The next prime is 131213009. The reversal of 131213000 is 312131.

It can be written as a sum of positive squares in 4 ways, for example, as 84235684 + 46977316 = 9178^2 + 6854^2 .

It is not an unprimeable number, because it can be changed into a prime (131213009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64607 + ... + 66606.

Almost surely, 2^131213000 is an apocalyptic number.

131213000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131213000 is an abundant number, since it is smaller than the sum of its proper divisors (175827760).

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

131213000 is a wasteful number, since it uses less digits than its factorization.

131213000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131234 (or 131220 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 131213000 is about 11454.8243111800. The cubic root of 131213000 is about 508.1504194238.

Adding to 131213000 its reverse (312131), we get a palindrome (131525131).

The spelling of 131213000 in words is "one hundred thirty-one million, two hundred thirteen thousand".