1270736313 has 40 divisors (see below), whose sum is σ = 2130498240. Its totient is φ = 659963040.

The previous prime is 1270736303. The next prime is 1270736339. The reversal of 1270736313 is 3136370721.

It is a happy number.

It is not a de Polignac number, because 1270736313 - 2⁶ = 1270736249 is a prime.

It is a super-2 number, since 2×1270736313² = 3229541554353667938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1270736303) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 305395 + ... + 309527.

It is an arithmetic number, because the mean of its divisors is an integer number (53262456).

Almost surely, 2^1270736313 is an apocalyptic number.

It is an amenable number.

1270736313 is a deficient number, since it is larger than the sum of its proper divisors (859761927).

1270736313 is an frugal number, since it uses more digits than its factorization.

1270736313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187 (or 4154 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 1270736313 is about 35647.3885859820. The cubic root of 1270736313 is about 1083.1413777028.

It can be divided in two parts, 127073 and 6313, that added together give a triangular number (133386 = T₅₁₆).

The spelling of 1270736313 in words is "one billion, two hundred seventy million, seven hundred thirty-six thousand, three hundred thirteen".