1309131748840 has 32 divisors (see below), whose sum is σ = 2982831840000. Its totient is φ = 517024183104.

The previous prime is 1309131748823. The next prime is 1309131748921. The reversal of 1309131748840 is 488471319031.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207137940 + ... + 207144259.

It is an arithmetic number, because the mean of its divisors is an integer number (93213495000).

Almost surely, 2^{1309131748840} is an apocalyptic number.

1309131748840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1309131748840 is an abundant number, since it is smaller than the sum of its proper divisors (1673700091160).

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

1309131748840 is a wasteful number, since it uses less digits than its factorization.

1309131748840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414282289 (or 414282285 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 1309131748840 in words is "one trillion, three hundred nine billion, one hundred thirty-one million, seven hundred forty-eight thousand, eight hundred forty".