31199776376972 has 48 divisors (see below), whose sum is σ = 62511400650048. Its totient is φ = 13347375022080.

The previous prime is 31199776376971. The next prime is 31199776377071. The reversal of 31199776376972 is 27967367799113.

It is a junction number, because it is equal to n+sod(n) for n = 31199776376893 and 31199776376902.

It is not an unprimeable number, because it can be changed into a prime (31199776376971) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 77999948 + ... + 78398924.

It is an arithmetic number, because the mean of its divisors is an integer number (1302320846876).

Almost surely, 2^{31199776376972} is an apocalyptic number.

It is an amenable number.

31199776376972 is an abundant number, since it is smaller than the sum of its proper divisors (31311624273076).

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

31199776376972 is a wasteful number, since it uses less digits than its factorization.

31199776376972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403986 (or 403984 counting only the distinct ones).

The product of its digits is 1134213192, while the sum is 77.

It can be divided in two parts, 3119977 and 6376972, that added together give a palindrome (9496949).

The spelling of 31199776376972 in words is "thirty-one trillion, one hundred ninety-nine billion, seven hundred seventy-six million, three hundred seventy-six thousand, nine hundred seventy-two".