75312030400331 has 4 divisors (see below), whose sum is σ = 75334252897200. Its totient is φ = 75289807903464.

The previous prime is 75312030400301. The next prime is 75312030400361. The reversal of 75312030400331 is 13300403021357.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (75312030400301) and next prime (75312030400361).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75312030400331 is a prime.

It is a super-2 number, since 2×75312030400331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75312030400301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11111243351 + ... + 11111250128.

It is an arithmetic number, because the mean of its divisors is an integer number (18833563224300).

Almost surely, 2^{75312030400331} is an apocalyptic number.

75312030400331 is a deficient number, since it is larger than the sum of its proper divisors (22222496869).

75312030400331 is a wasteful number, since it uses less digits than its factorization.

75312030400331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22222496868.

The product of its (nonzero) digits is 22680, while the sum is 32.

Adding to 75312030400331 its reverse (13300403021357), we get a palindrome (88612433421688).

The spelling of 75312030400331 in words is "seventy-five trillion, three hundred twelve billion, thirty million, four hundred thousand, three hundred thirty-one".