1307123990 has 32 divisors (see below), whose sum is σ = 2442859776. Its totient is φ = 503038080.

The previous prime is 1307123977. The next prime is 1307124011. The reversal of 1307123990 is 993217031.

It is a self number, because there is not a number n which added to its sum of digits gives 1307123990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41444 + ... + 65816.

It is an arithmetic number, because the mean of its divisors is an integer number (76339368).

Almost surely, 2^1307123990 is an apocalyptic number.

1307123990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1307123990 is a deficient number, since it is larger than the sum of its proper divisors (1135735786).

1307123990 is a wasteful number, since it uses less digits than its factorization.

1307123990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24584.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 1307123990 is about 36154.1697456877. The cubic root of 1307123990 is about 1093.3828606563.

The spelling of 1307123990 in words is "one billion, three hundred seven million, one hundred twenty-three thousand, nine hundred ninety".