28315134175031 has 32 divisors (see below), whose sum is σ = 33936221915136. Its totient is φ = 23323862016000.

The previous prime is 28315134175007. The next prime is 28315134175033. The reversal of 28315134175031 is 13057143151382.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28315134175031 is a prime.

It is a super-2 number, since 2×28315134175031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28315134175033) 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, 11535185 + ... + 13772826.

It is an arithmetic number, because the mean of its divisors is an integer number (1060506934848).

Almost surely, 2^{28315134175031} is an apocalyptic number.

28315134175031 is a deficient number, since it is larger than the sum of its proper divisors (5621087740105).

28315134175031 is a wasteful number, since it uses less digits than its factorization.

28315134175031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25308263.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 28315134175031 in words is "twenty-eight trillion, three hundred fifteen billion, one hundred thirty-four million, one hundred seventy-five thousand, thirty-one".