1312601235 has 16 divisors (see below), whose sum is σ = 2291086080. Its totient is φ = 636412640.

The previous prime is 1312601231. The next prime is 1312601239. The reversal of 1312601235 is 5321062131.

It is an interprime number because it is at equal distance from previous prime (1312601231) and next prime (1312601239).

It is not a de Polignac number, because 1312601235 - 2² = 1312601231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312601231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3977415 + ... + 3977744.

It is an arithmetic number, because the mean of its divisors is an integer number (143192880).

Almost surely, 2^1312601235 is an apocalyptic number.

1312601235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1312601235 is a deficient number, since it is larger than the sum of its proper divisors (978484845).

1312601235 is a wasteful number, since it uses less digits than its factorization.

1312601235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7955178.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1312601235 is about 36229.8390142711. The cubic root of 1312601235 is about 1094.9079341289.

Adding to 1312601235 its reverse (5321062131), we get a palindrome (6633663366).

The spelling of 1312601235 in words is "one billion, three hundred twelve million, six hundred one thousand, two hundred thirty-five".