1391432012 has 24 divisors (see below), whose sum is σ = 2599973376. Its totient is φ = 649989648.

The previous prime is 1391431967. The next prime is 1391432023. The reversal of 1391432012 is 2102341931.

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, 171908 + ... + 179819.

It is an arithmetic number, because the mean of its divisors is an integer number (108332224).

Almost surely, 2^1391432012 is an apocalyptic number.

It is an amenable number.

1391432012 is a deficient number, since it is larger than the sum of its proper divisors (1208541364).

1391432012 is a wasteful number, since it uses less digits than its factorization.

1391432012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351797 (or 351795 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1391432012 is about 37301.9035975378. The cubic root of 1391432012 is about 1116.4021484193.

Adding to 1391432012 its reverse (2102341931), we get a palindrome (3493773943).

The spelling of 1391432012 in words is "one billion, three hundred ninety-one million, four hundred thirty-two thousand, twelve".