45631986531 has 4 divisors (see below), whose sum is σ = 60842648712. Its totient is φ = 30421324352.

The previous prime is 45631986497. The next prime is 45631986541. The reversal of 45631986531 is 13568913654.

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

It is a cyclic number.

It is not a de Polignac number, because 45631986531 - 2⁶ = 45631986467 is a prime.

It is a super-2 number, since 2×45631986531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45631986541) 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, 7605331086 + ... + 7605331091.

It is an arithmetic number, because the mean of its divisors is an integer number (15210662178).

Almost surely, 2^45631986531 is an apocalyptic number.

45631986531 is a deficient number, since it is larger than the sum of its proper divisors (15210662181).

45631986531 is a wasteful number, since it uses less digits than its factorization.

45631986531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15210662180.

The product of its digits is 2332800, while the sum is 51.

The spelling of 45631986531 in words is "forty-five billion, six hundred thirty-one million, nine hundred eighty-six thousand, five hundred thirty-one".