1431744457 has 32 divisors (see below), whose sum is σ = 1769112576. Its totient is φ = 1140110400.

The previous prime is 1431744407. The next prime is 1431744467. The reversal of 1431744457 is 7544471341.

It is a de Polignac number, because none of the positive numbers 2^k-1431744457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1431744407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 429198 + ... + 432520.

It is an arithmetic number, because the mean of its divisors is an integer number (55284768).

Almost surely, 2^1431744457 is an apocalyptic number.

It is an amenable number.

1431744457 is a deficient number, since it is larger than the sum of its proper divisors (337368119).

1431744457 is a wasteful number, since it uses less digits than its factorization.

1431744457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501.

The product of its digits is 188160, while the sum is 40.

The square root of 1431744457 is about 37838.3992393970. The cubic root of 1431744457 is about 1127.0811077084.

The spelling of 1431744457 in words is "one billion, four hundred thirty-one million, seven hundred forty-four thousand, four hundred fifty-seven".