1245285318531 has 8 divisors (see below), whose sum is σ = 1660387098960. Its totient is φ = 830186875232.

The previous prime is 1245285318467. The next prime is 1245285318539. The reversal of 1245285318531 is 1358135825421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1245285318531 - 2⁶ = 1245285318467 is a prime.

It is a super-2 number, since 2×1245285318531² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1245285318539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230605 + ... + 1594913.

It is an arithmetic number, because the mean of its divisors is an integer number (207548387370).

Almost surely, 2^{1245285318531} is an apocalyptic number.

1245285318531 is a deficient number, since it is larger than the sum of its proper divisors (415101780429).

1245285318531 is a wasteful number, since it uses less digits than its factorization.

1245285318531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668565.

The product of its digits is 1152000, while the sum is 48.

The spelling of 1245285318531 in words is "one trillion, two hundred forty-five billion, two hundred eighty-five million, three hundred eighteen thousand, five hundred thirty-one".