331891461 has 24 divisors (see below), whose sum is σ = 531853920. Its totient is φ = 197733600.

The previous prime is 331891447. The next prime is 331891471. The reversal of 331891461 is 164198133.

It is not a de Polignac number, because 331891461 - 2⁵ = 331891429 is a prime.

It is a super-2 number, since 2×331891461² = 220303883769429042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331891471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22570 + ... + 34251.

It is an arithmetic number, because the mean of its divisors is an integer number (22160580).

Almost surely, 2^331891461 is an apocalyptic number.

It is an amenable number.

331891461 is a deficient number, since it is larger than the sum of its proper divisors (199962459).

331891461 is a wasteful number, since it uses less digits than its factorization.

331891461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56897 (or 56894 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 331891461 is about 18217.8884890648. Note that the first 3 decimals coincide. The cubic root of 331891461 is about 692.3600909428.

The spelling of 331891461 in words is "three hundred thirty-one million, eight hundred ninety-one thousand, four hundred sixty-one".