1231515254422 has 16 divisors (see below), whose sum is σ = 1954572899760. Its totient is φ = 580326792192.

The previous prime is 1231515254371. The next prime is 1231515254423. The reversal of 1231515254422 is 2244525151321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231515254423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83951983 + ... + 83966650.

It is an arithmetic number, because the mean of its divisors is an integer number (122160806235).

Almost surely, 2^{1231515254422} is an apocalyptic number.

1231515254422 is a deficient number, since it is larger than the sum of its proper divisors (723057645338).

1231515254422 is a wasteful number, since it uses less digits than its factorization.

1231515254422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167918847.

The product of its digits is 96000, while the sum is 37.

The spelling of 1231515254422 in words is "one trillion, two hundred thirty-one billion, five hundred fifteen million, two hundred fifty-four thousand, four hundred twenty-two".