1312242552309 has 32 divisors (see below), whose sum is σ = 1902215435904. Its totient is φ = 799835431680.

The previous prime is 1312242552281. The next prime is 1312242552311. The reversal of 1312242552309 is 9032552422131.

It is not a de Polignac number, because 1312242552309 - 2⁵ = 1312242552277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312242552319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24431127 + ... + 24484779.

It is an arithmetic number, because the mean of its divisors is an integer number (59444232372).

Almost surely, 2^{1312242552309} is an apocalyptic number.

It is an amenable number.

1312242552309 is a deficient number, since it is larger than the sum of its proper divisors (589972883595).

1312242552309 is a wasteful number, since it uses less digits than its factorization.

1312242552309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59637.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 1312242552309 in words is "one trillion, three hundred twelve billion, two hundred forty-two million, five hundred fifty-two thousand, three hundred nine".