311230302990 has 32 divisors (see below), whose sum is σ = 746975882016. Its totient is φ = 82992174720.

The previous prime is 311230302961. The next prime is 311230303051. The reversal of 311230302990 is 99203032113.

It is a congruent number.

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, 948580 + ... + 1233800.

It is an arithmetic number, because the mean of its divisors is an integer number (23342996313).

Almost surely, 2^311230302990 is an apocalyptic number.

311230302990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

311230302990 is an abundant number, since it is smaller than the sum of its proper divisors (435745579026).

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

311230302990 is a wasteful number, since it uses less digits than its factorization.

311230302990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321604.

The product of its (nonzero) digits is 8748, while the sum is 33.

The spelling of 311230302990 in words is "three hundred eleven billion, two hundred thirty million, three hundred two thousand, nine hundred ninety".