31423477984 has 24 divisors (see below), whose sum is σ = 61969335120. Its totient is φ = 15685234176.

The previous prime is 31423477927. The next prime is 31423478041. The reversal of 31423477984 is 48977432413.

It is an interprime number because it is at equal distance from previous prime (31423477927) and next prime (31423478041).

It is a super-2 number, since 2×31423477984² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809004 + ... + 846955.

It is an arithmetic number, because the mean of its divisors is an integer number (2582055630).

Almost surely, 2^31423477984 is an apocalyptic number.

It is an amenable number.

31423477984 is a deficient number, since it is larger than the sum of its proper divisors (30545857136).

31423477984 is a wasteful number, since it uses less digits than its factorization.

31423477984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656562 (or 1656554 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 52.

The spelling of 31423477984 in words is "thirty-one billion, four hundred twenty-three million, four hundred seventy-seven thousand, nine hundred eighty-four".