1431257974 has 4 divisors (see below), whose sum is σ = 2146886964. Its totient is φ = 715628986.

The previous prime is 1431257921. The next prime is 1431257981. The reversal of 1431257974 is 4797521341.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1431257974.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357814492 + ... + 357814495.

It is an arithmetic number, because the mean of its divisors is an integer number (536721741).

Almost surely, 2^1431257974 is an apocalyptic number.

1431257974 is a deficient number, since it is larger than the sum of its proper divisors (715628990).

1431257974 is an equidigital number, since it uses as much as digits as its factorization.

1431257974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715628989.

The product of its digits is 211680, while the sum is 43.

The square root of 1431257974 is about 37831.9702632575. The cubic root of 1431257974 is about 1126.9534387636.

The spelling of 1431257974 in words is "one billion, four hundred thirty-one million, two hundred fifty-seven thousand, nine hundred seventy-four".