1231413404251 has 8 divisors (see below), whose sum is σ = 1305846205344. Its totient is φ = 1157202460800.

The previous prime is 1231413404239. The next prime is 1231413404261. The reversal of 1231413404251 is 1524043141321.

It is a happy number.

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 1231413404251 - 2²¹ = 1231411307099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231413404261) 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, 55452975 + ... + 55475176.

It is an arithmetic number, because the mean of its divisors is an integer number (163230775668).

Almost surely, 2^{1231413404251} is an apocalyptic number.

1231413404251 is a deficient number, since it is larger than the sum of its proper divisors (74432801093).

1231413404251 is a wasteful number, since it uses less digits than its factorization.

1231413404251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110928821.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 1231413404251 its reverse (1524043141321), we get a palindrome (2755456545572).

The spelling of 1231413404251 in words is "one trillion, two hundred thirty-one billion, four hundred thirteen million, four hundred four thousand, two hundred fifty-one".