1311257470 has 32 divisors (see below), whose sum is σ = 2390731200. Its totient is φ = 517752576.

The previous prime is 1311257461. The next prime is 1311257483. The reversal of 1311257470 is 747521131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 993471 + ... + 994789.

It is an arithmetic number, because the mean of its divisors is an integer number (74710350).

Almost surely, 2^1311257470 is an apocalyptic number.

1311257470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311257470 is a deficient number, since it is larger than the sum of its proper divisors (1079473730).

1311257470 is a wasteful number, since it uses less digits than its factorization.

1311257470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 1311257470 is about 36211.2892617758. The cubic root of 1311257470 is about 1094.5341721456.

The spelling of 1311257470 in words is "one billion, three hundred eleven million, two hundred fifty-seven thousand, four hundred seventy".