131631951 has 16 divisors (see below), whose sum is σ = 191675520. Its totient is φ = 79689120.

The previous prime is 131631947. The next prime is 131631953. The reversal of 131631951 is 159136131.

It is not a de Polignac number, because 131631951 - 2² = 131631947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131631953) 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, 40785 + ... + 43893.

It is an arithmetic number, because the mean of its divisors is an integer number (11979720).

Almost surely, 2^131631951 is an apocalyptic number.

131631951 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131631951 is a deficient number, since it is larger than the sum of its proper divisors (60043569).

131631951 is a wasteful number, since it uses less digits than its factorization.

131631951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4406.

The product of its digits is 2430, while the sum is 30.

The square root of 131631951 is about 11473.0968356412. The cubic root of 131631951 is about 508.6906706386.

The spelling of 131631951 in words is "one hundred thirty-one million, six hundred thirty-one thousand, nine hundred fifty-one".