311430230120040 has 64 divisors (see below), whose sum is σ = 983463884596800. Its totient is φ = 78677110766592.

The previous prime is 311430230120033. The next prime is 311430230120123. The reversal of 311430230120040 is 40021032034113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 68296100817 + ... + 68296105376.

It is an arithmetic number, because the mean of its divisors is an integer number (15366623196825).

Almost surely, 2^{311430230120040} is an apocalyptic number.

311430230120040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311430230120040 is an abundant number, since it is smaller than the sum of its proper divisors (672033654476760).

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

311430230120040 is a wasteful number, since it uses less digits than its factorization.

311430230120040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136592206226 (or 136592206222 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 311430230120040 its reverse (40021032034113), we get a palindrome (351451262154153).

The spelling of 311430230120040 in words is "three hundred eleven trillion, four hundred thirty billion, two hundred thirty million, one hundred twenty thousand, forty".