1245363651231 has 16 divisors (see below), whose sum is σ = 1936425504000. Its totient is φ = 711636371544.

The previous prime is 1245363651223. The next prime is 1245363651269. The reversal of 1245363651231 is 1321563635421.

It is a happy number.

It is not a de Polignac number, because 1245363651231 - 2³ = 1245363651223 is a prime.

It is a super-2 number, since 2×1245363651231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245363651131) 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, 605131941 + ... + 605133998.

It is an arithmetic number, because the mean of its divisors is an integer number (121026594000).

Almost surely, 2^{1245363651231} is an apocalyptic number.

1245363651231 is a deficient number, since it is larger than the sum of its proper divisors (691061852769).

1245363651231 is an equidigital number, since it uses as much as digits as its factorization.

1245363651231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210265963 (or 1210265949 counting only the distinct ones).

The product of its digits is 388800, while the sum is 42.

The spelling of 1245363651231 in words is "one trillion, two hundred forty-five billion, three hundred sixty-three million, six hundred fifty-one thousand, two hundred thirty-one".