1213708372 has 12 divisors (see below), whose sum is σ = 2235778720. Its totient is φ = 574914456.

The previous prime is 1213708339. The next prime is 1213708403. The reversal of 1213708372 is 2738073121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7984848 + ... + 7984999.

Almost surely, 2^1213708372 is an apocalyptic number.

It is an amenable number.

1213708372 is a deficient number, since it is larger than the sum of its proper divisors (1022070348).

1213708372 is a wasteful number, since it uses less digits than its factorization.

1213708372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15969870 (or 15969868 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 1213708372 is about 34838.3175827995. The cubic root of 1213708372 is about 1066.6897352216.

The spelling of 1213708372 in words is "one billion, two hundred thirteen million, seven hundred eight thousand, three hundred seventy-two".