131012156 has 12 divisors (see below), whose sum is σ = 250114200. Its totient is φ = 59550960.

The previous prime is 131012113. The next prime is 131012173. The reversal of 131012156 is 651210131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488731 + ... + 1488818.

It is an arithmetic number, because the mean of its divisors is an integer number (20842850).

Almost surely, 2^131012156 is an apocalyptic number.

It is an amenable number.

131012156 is a deficient number, since it is larger than the sum of its proper divisors (119102044).

131012156 is a wasteful number, since it uses less digits than its factorization.

131012156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977564 (or 2977562 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 131012156 is about 11446.0541672666. The cubic root of 131012156 is about 507.8910165697.

Adding to 131012156 its reverse (651210131), we get a palindrome (782222287).

The spelling of 131012156 in words is "one hundred thirty-one million, twelve thousand, one hundred fifty-six".