1231436257401 has 16 divisors (see below), whose sum is σ = 1876490123648. Its totient is φ = 703671926400.

The previous prime is 1231436257397. The next prime is 1231436257463. The reversal of 1231436257401 is 1047526341321.

It is not a de Polignac number, because 1231436257401 - 2² = 1231436257397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1231436257401.

It is not an unprimeable number, because it can be changed into a prime (1231436237401) 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, 3991671 + ... + 4289091.

It is an arithmetic number, because the mean of its divisors is an integer number (117280632728).

Almost surely, 2^{1231436257401} is an apocalyptic number.

It is an amenable number.

1231436257401 is a deficient number, since it is larger than the sum of its proper divisors (645053866247).

1231436257401 is a wasteful number, since it uses less digits than its factorization.

1231436257401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494592.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 1231436257401 in words is "one trillion, two hundred thirty-one billion, four hundred thirty-six million, two hundred fifty-seven thousand, four hundred one".