331011012 has 48 divisors (see below), whose sum is σ = 819346752. Its totient is φ = 103649280.

The previous prime is 331011007. The next prime is 331011047. The reversal of 331011012 is 210110133.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136087 + ... + 138497.

It is an arithmetic number, because the mean of its divisors is an integer number (17069724).

Almost surely, 2^331011012 is an apocalyptic number.

It is an amenable number.

331011012 is an abundant number, since it is smaller than the sum of its proper divisors (488335740).

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

331011012 is a wasteful number, since it uses less digits than its factorization.

331011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108 (or 3106 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 331011012 is about 18193.7080332735. The cubic root of 331011012 is about 691.7473127107.

Adding to 331011012 its reverse (210110133), we get a palindrome (541121145).

The spelling of 331011012 in words is "three hundred thirty-one million, eleven thousand, twelve".