31373417340 has 120 divisors (see below), whose sum is σ = 99605777040. Its totient is φ = 8265411072.

The previous prime is 31373417311. The next prime is 31373417357. The reversal of 31373417340 is 4371437313.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 31373417295 and 31373417304.

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 39 ways as a sum of consecutive naturals, for example, 17796 + ... + 251124.

It is an arithmetic number, because the mean of its divisors is an integer number (830048142).

Almost surely, 2^31373417340 is an apocalyptic number.

31373417340 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 31373417340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49802888520).

31373417340 is an abundant number, since it is smaller than the sum of its proper divisors (68232359700).

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

31373417340 is a wasteful number, since it uses less digits than its factorization.

31373417340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233433 (or 233422 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The spelling of 31373417340 in words is "thirty-one billion, three hundred seventy-three million, four hundred seventeen thousand, three hundred forty".