331897055 has 16 divisors (see below), whose sum is σ = 461411904. Its totient is φ = 224467200.

The previous prime is 331897039. The next prime is 331897057. The reversal of 331897055 is 550798133.

It is a happy number.

It is not a de Polignac number, because 331897055 - 2⁴ = 331897039 is a prime.

It is a super-2 number, since 2×331897055² = 220311310235346050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331897057) 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, 62396 + ... + 67505.

It is an arithmetic number, because the mean of its divisors is an integer number (28838244).

Almost surely, 2^331897055 is an apocalyptic number.

331897055 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

331897055 is a deficient number, since it is larger than the sum of its proper divisors (129514849).

331897055 is a wasteful number, since it uses less digits than its factorization.

331897055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129986.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 331897055 is about 18218.0420188340. The cubic root of 331897055 is about 692.3639808095.

The spelling of 331897055 in words is "three hundred thirty-one million, eight hundred ninety-seven thousand, fifty-five".