331651061 has 18 divisors (see below), whose sum is σ = 407193750. Its totient is φ = 269296272.

The previous prime is 331651043. The next prime is 331651087. The reversal of 331651061 is 160156133.

It can be written as a sum of positive squares in only one way, i.e., 298944100 + 32706961 = 17290^2 + 5719^2 .

It is a de Polignac number, because none of the positive numbers 2^k-331651061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331651061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331653061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8315 + ... + 27063.

It is an arithmetic number, because the mean of its divisors is an integer number (22621875).

Almost surely, 2^331651061 is an apocalyptic number.

It is an amenable number.

331651061 is a deficient number, since it is larger than the sum of its proper divisors (75542689).

331651061 is a wasteful number, since it uses less digits than its factorization.

331651061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18801 (or 18775 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 331651061 is about 18211.2893832370. The cubic root of 331651061 is about 692.1928841012.

The spelling of 331651061 in words is "three hundred thirty-one million, six hundred fifty-one thousand, sixty-one".