1431397692 has 18 divisors (see below), whose sum is σ = 3618255368. Its totient is φ = 477132552.

The previous prime is 1431397691. The next prime is 1431397697. The reversal of 1431397692 is 2967931341.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431397691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19880488 + ... + 19880559.

Almost surely, 2^1431397692 is an apocalyptic number.

1431397692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1431397692 is an abundant number, since it is smaller than the sum of its proper divisors (2186857676).

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

1431397692 is a wasteful number, since it uses less digits than its factorization.

1431397692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39761057 (or 39761052 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 1431397692 is about 37833.8167781153. The cubic root of 1431397692 is about 1126.9901082670.

The spelling of 1431397692 in words is "one billion, four hundred thirty-one million, three hundred ninety-seven thousand, six hundred ninety-two".