1470431257 has 4 divisors (see below), whose sum is σ = 1506295476. Its totient is φ = 1434567040.

The previous prime is 1470431231. The next prime is 1470431297. The reversal of 1470431257 is 7521340741.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64256256 + 1406175001 = 8016^2 + 37499^2 .

It is not a de Polignac number, because 1470431257 - 2²³ = 1462042649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1470431227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17932048 + ... + 17932129.

It is an arithmetic number, because the mean of its divisors is an integer number (376573869).

Almost surely, 2^1470431257 is an apocalyptic number.

It is an amenable number.

1470431257 is a deficient number, since it is larger than the sum of its proper divisors (35864219).

1470431257 is an equidigital number, since it uses as much as digits as its factorization.

1470431257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35864218.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 1470431257 is about 38346.2026412003. The cubic root of 1470431257 is about 1137.1425453654.

Adding to 1470431257 its reverse (7521340741), we get a palindrome (8991771998).

The spelling of 1470431257 in words is "one billion, four hundred seventy million, four hundred thirty-one thousand, two hundred fifty-seven".