331685461 has 16 divisors (see below), whose sum is σ = 359470080. Its totient is φ = 305141760.

The previous prime is 331685447. The next prime is 331685491. The reversal of 331685461 is 164586133.

It is a cyclic number.

It is not a de Polignac number, because 331685461 - 2⁵ = 331685429 is a prime.

It is a super-2 number, since 2×331685461² = 220030490077565042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331685461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331685491) 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, 122005 + ... + 124693.

It is an arithmetic number, because the mean of its divisors is an integer number (22466880).

Almost surely, 2^331685461 is an apocalyptic number.

331685461 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

331685461 is a deficient number, since it is larger than the sum of its proper divisors (27784619).

331685461 is a wasteful number, since it uses less digits than its factorization.

331685461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916.

The product of its digits is 51840, while the sum is 37.

The square root of 331685461 is about 18212.2338278422. The cubic root of 331685461 is about 692.2168154906.

The spelling of 331685461 in words is "three hundred thirty-one million, six hundred eighty-five thousand, four hundred sixty-one".