1231401434154 has 64 divisors (see below), whose sum is σ = 2567981145600. Its totient is φ = 393302227968.

The previous prime is 1231401434113. The next prime is 1231401434167. The reversal of 1231401434154 is 4514341041321.

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 31 ways as a sum of consecutive naturals, for example, 6732034 + ... + 6912530.

It is an arithmetic number, because the mean of its divisors is an integer number (40124705400).

Almost surely, 2^{1231401434154} is an apocalyptic number.

1231401434154 is an abundant number, since it is smaller than the sum of its proper divisors (1336579711446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231401434154 is a wasteful number, since it uses less digits than its factorization.

1231401434154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181007.

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 1231401434154 its reverse (4514341041321), we get a palindrome (5745742475475).

The spelling of 1231401434154 in words is "one trillion, two hundred thirty-one billion, four hundred one million, four hundred thirty-four thousand, one hundred fifty-four".