31677202980 has 144 divisors (see below), whose sum is σ = 100615342464. Its totient is φ = 8365109760.

The previous prime is 31677202979. The next prime is 31677202993. The reversal of 31677202980 is 8920277613.

It is a super-2 number, since 2×31677202980² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 468940 + ... + 532220.

It is an arithmetic number, because the mean of its divisors is an integer number (698717656).

Almost surely, 2^31677202980 is an apocalyptic number.

31677202980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31677202980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50307671232).

31677202980 is an abundant number, since it is smaller than the sum of its proper divisors (68938139484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31677202980 is a wasteful number, since it uses less digits than its factorization.

31677202980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63408 (or 63394 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 31677202980 in words is "thirty-one billion, six hundred seventy-seven million, two hundred two thousand, nine hundred eighty".