1231451253422 has 16 divisors (see below), whose sum is σ = 1994278175232. Its totient is φ = 566930469600.

The previous prime is 1231451253419. The next prime is 1231451253443. The reversal of 1231451253422 is 2243521541321.

It is a super-2 number, since 2×1231451253422² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 59641454 + ... + 59662097.

It is an arithmetic number, because the mean of its divisors is an integer number (124642385952).

Almost surely, 2^{1231451253422} is an apocalyptic number.

1231451253422 is a deficient number, since it is larger than the sum of its proper divisors (762826921810).

1231451253422 is a wasteful number, since it uses less digits than its factorization.

1231451253422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119303963.

The product of its digits is 57600, while the sum is 35.

Adding to 1231451253422 its reverse (2243521541321), we get a palindrome (3474972794743).

The spelling of 1231451253422 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-one million, two hundred fifty-three thousand, four hundred twenty-two".