1431394992 has 120 divisors (see below), whose sum is σ = 4278119040. Its totient is φ = 445777920.

The previous prime is 1431394967. The next prime is 1431394997. The reversal of 1431394992 is 2994931341.

1431394992 is a `hidden beast` number, since 143 + 13 + 9 + 499 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1431394997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123928 + ... + 134984.

It is an arithmetic number, because the mean of its divisors is an integer number (35650992).

Almost surely, 2^1431394992 is an apocalyptic number.

1431394992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1431394992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2139059520).

1431394992 is an abundant number, since it is smaller than the sum of its proper divisors (2846724048).

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

1431394992 is a wasteful number, since it uses less digits than its factorization.

1431394992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11131 (or 11122 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 1431394992 is about 37833.7810957351. The cubic root of 1431394992 is about 1126.9893996647.

The spelling of 1431394992 in words is "one billion, four hundred thirty-one million, three hundred ninety-four thousand, nine hundred ninety-two".