1311423362145 has 32 divisors (see below), whose sum is σ = 2510759260800. Its totient is φ = 645623808192.

The previous prime is 1311423362131. The next prime is 1311423362147. The reversal of 1311423362145 is 5412633241131.

1311423362145 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 4 + 23 + 3 + 621 + 4 + 5 = 666.

It is not a de Polignac number, because 1311423362145 - 2⁸ = 1311423361889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311423362147) 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, 373623135 + ... + 373626644.

It is an arithmetic number, because the mean of its divisors is an integer number (78461226900).

Almost surely, 2^{1311423362145} is an apocalyptic number.

1311423362145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1311423362145 is a deficient number, since it is larger than the sum of its proper divisors (1199335898655).

1311423362145 is a wasteful number, since it uses less digits than its factorization.

1311423362145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747249806 (or 747249800 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The spelling of 1311423362145 in words is "one trillion, three hundred eleven billion, four hundred twenty-three million, three hundred sixty-two thousand, one hundred forty-five".