131012331 has 8 divisors (see below), whose sum is σ = 174756864. Its totient is φ = 87304680.

The previous prime is 131012327. The next prime is 131012333. The reversal of 131012331 is 133210131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131012331 - 2² = 131012327 is a prime.

It is a super-3 number, since 3×131012331³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 131012331.

It is not an unprimeable number, because it can be changed into a prime (131012333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550 + ... + 16196.

It is an arithmetic number, because the mean of its divisors is an integer number (21844608).

Almost surely, 2^131012331 is an apocalyptic number.

131012331 is a deficient number, since it is larger than the sum of its proper divisors (43744533).

131012331 is a wasteful number, since it uses less digits than its factorization.

131012331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18441.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 131012331 is about 11446.0618118198. The cubic root of 131012331 is about 507.8912427088.

Adding to 131012331 its reverse (133210131), we get a palindrome (264222462).

The spelling of 131012331 in words is "one hundred thirty-one million, twelve thousand, three hundred thirty-one".