1307707231540 has 24 divisors (see below), whose sum is σ = 2746569514752. Its totient is φ = 523009687200.

The previous prime is 1307707231531. The next prime is 1307707231541. The reversal of 1307707231540 is 451327077031.

It is a super-2 number, since 2×1307707231540² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1307707231493 and 1307707231502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307707231541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4428744 + ... + 4714783.

It is an arithmetic number, because the mean of its divisors is an integer number (114440396448).

Almost surely, 2^{1307707231540} is an apocalyptic number.

1307707231540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1307707231540 is an abundant number, since it is smaller than the sum of its proper divisors (1438862283212).

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

1307707231540 is a wasteful number, since it uses less digits than its factorization.

1307707231540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9150687 (or 9150685 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 40.

The spelling of 1307707231540 in words is "one trillion, three hundred seven billion, seven hundred seven million, two hundred thirty-one thousand, five hundred forty".