31143677460 has 192 divisors, whose sum is σ = 101681879040. Its totient is φ = 6974922240.

The previous prime is 31143677447. The next prime is 31143677479. The reversal of 31143677460 is 6477634113.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8200282 + ... + 8204078.

It is an arithmetic number, because the mean of its divisors is an integer number (529593120).

Almost surely, 2^31143677460 is an apocalyptic number.

31143677460 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 31143677460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50840939520).

31143677460 is an abundant number, since it is smaller than the sum of its proper divisors (70538201580).

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

31143677460 is a wasteful number, since it uses less digits than its factorization.

31143677460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4206 (or 4204 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 42.

The spelling of 31143677460 in words is "thirty-one billion, one hundred forty-three million, six hundred seventy-seven thousand, four hundred sixty".