311663261364 has 96 divisors (see below), whose sum is σ = 899576891136. Its totient is φ = 81779604480.

The previous prime is 311663261339. The next prime is 311663261369. The reversal of 311663261364 is 463162366113.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311663261369) 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, 509257 + ... + 939504.

It is an arithmetic number, because the mean of its divisors is an integer number (9370592616).

Almost surely, 2^311663261364 is an apocalyptic number.

It is an amenable number.

311663261364 is an abundant number, since it is smaller than the sum of its proper divisors (587913629772).

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

311663261364 is a wasteful number, since it uses less digits than its factorization.

311663261364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448985 (or 1448983 counting only the distinct ones).

The product of its digits is 279936, while the sum is 42.

The spelling of 311663261364 in words is "three hundred eleven billion, six hundred sixty-three million, two hundred sixty-one thousand, three hundred sixty-four".