28232859631 has 2 divisors, whose sum is σ = 28232859632. Its totient is φ = 28232859630.

The previous prime is 28232859541. The next prime is 28232859643. The reversal of 28232859631 is 13695823282.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28232859631 - 2²⁷ = 28098641903 is a prime.

It is a super-2 number, since 2×28232859631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28232859661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14116429815 + 14116429816.

It is an arithmetic number, because the mean of its divisors is an integer number (14116429816).

Almost surely, 2^28232859631 is an apocalyptic number.

28232859631 is a deficient number, since it is larger than the sum of its proper divisors (1).

28232859631 is an equidigital number, since it uses as much as digits as its factorization.

28232859631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 49.

The spelling of 28232859631 in words is "twenty-eight billion, two hundred thirty-two million, eight hundred fifty-nine thousand, six hundred thirty-one".