1310931934380 has 72 divisors (see below), whose sum is σ = 3988293402912. Its totient is φ = 348544498176.

The previous prime is 1310931934363. The next prime is 1310931934387. The reversal of 1310931934380 is 834391390131.

1310931934380 is a `hidden beast` number, since 13 + 10 + 9 + 3 + 193 + 438 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1310931934387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10744912 + ... + 10866231.

Almost surely, 2^{1310931934380} is an apocalyptic number.

1310931934380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310931934380 is an abundant number, since it is smaller than the sum of its proper divisors (2677361468532).

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

1310931934380 is a wasteful number, since it uses less digits than its factorization.

1310931934380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21611495 (or 21611490 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 1310931934380 in words is "one trillion, three hundred ten billion, nine hundred thirty-one million, nine hundred thirty-four thousand, three hundred eighty".