331232131 has 16 divisors (see below), whose sum is σ = 366825024. Its totient is φ = 297493504.

The previous prime is 331232093. The next prime is 331232147. The reversal of 331232131 is 131232133.

It is a cyclic number.

It is not a de Polignac number, because 331232131 - 2¹⁹ = 330707843 is a prime.

It is a super-2 number, since 2×331232131² = 219429449213602322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331232099 and 331232108.

It is not an unprimeable number, because it can be changed into a prime (331232191) 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, 240561 + ... + 241933.

It is an arithmetic number, because the mean of its divisors is an integer number (22926564).

Almost surely, 2^331232131 is an apocalyptic number.

331232131 is a deficient number, since it is larger than the sum of its proper divisors (35592893).

331232131 is a wasteful number, since it uses less digits than its factorization.

331232131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030.

The product of its digits is 324, while the sum is 19.

The square root of 331232131 is about 18199.7838173974. The cubic root of 331232131 is about 691.9013100319.

Adding to 331232131 its reverse (131232133), we get a palindrome (462464264).

The spelling of 331232131 in words is "three hundred thirty-one million, two hundred thirty-two thousand, one hundred thirty-one".