331977954 has 64 divisors (see below), whose sum is σ = 835246080. Its totient is φ = 85451520.

The previous prime is 331977953. The next prime is 331977959. The reversal of 331977954 is 459779133.

It is a happy number.

It is a super-2 number, since 2×331977954² = 220418723884052232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331977953) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49027 + ... + 55385.

It is an arithmetic number, because the mean of its divisors is an integer number (13050720).

Almost surely, 2^331977954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331977954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417623040).

331977954 is an abundant number, since it is smaller than the sum of its proper divisors (503268126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331977954 is a wasteful number, since it uses less digits than its factorization.

331977954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6495.

The product of its digits is 714420, while the sum is 48.

The square root of 331977954 is about 18220.2621825264. The cubic root of 331977954 is about 692.4202301822.

The spelling of 331977954 in words is "three hundred thirty-one million, nine hundred seventy-seven thousand, nine hundred fifty-four".