131213969 has 8 divisors (see below), whose sum is σ = 132021120. Its totient is φ = 130410000.

The previous prime is 131213963. The next prime is 131213977. The reversal of 131213969 is 969312131.

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 131213969 - 2⁸ = 131213713 is a prime.

It is a super-2 number, since 2×131213969² = 34434211321465922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131213963) 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, 174344 + ... + 175094.

It is an arithmetic number, because the mean of its divisors is an integer number (16502640).

Almost surely, 2^131213969 is an apocalyptic number.

It is an amenable number.

131213969 is a deficient number, since it is larger than the sum of its proper divisors (807151).

131213969 is an equidigital number, since it uses as much as digits as its factorization.

131213969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591.

The product of its digits is 8748, while the sum is 35.

The square root of 131213969 is about 11454.8666076912. The cubic root of 131213969 is about 508.1516703074.

The spelling of 131213969 in words is "one hundred thirty-one million, two hundred thirteen thousand, nine hundred sixty-nine".