31428872888807 has 2 divisors, whose sum is σ = 31428872888808. Its totient is φ = 31428872888806.

The previous prime is 31428872888789. The next prime is 31428872888867. The reversal of 31428872888807 is 70888827882413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31428872888807 - 2²⁰ = 31428871840231 is a prime.

It is a super-2 number, since 2×31428872888807² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31428872888867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15714436444403 + 15714436444404.

It is an arithmetic number, because the mean of its divisors is an integer number (15714436444404).

Almost surely, 2^{31428872888807} is an apocalyptic number.

31428872888807 is a deficient number, since it is larger than the sum of its proper divisors (1).

31428872888807 is an equidigital number, since it uses as much as digits as its factorization.

31428872888807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 616562688, while the sum is 74.

The spelling of 31428872888807 in words is "thirty-one trillion, four hundred twenty-eight billion, eight hundred seventy-two million, eight hundred eighty-eight thousand, eight hundred seven".