1231424041155 has 64 divisors (see below), whose sum is σ = 2457273839616. Its totient is φ = 511589232000.

The previous prime is 1231424041153. The next prime is 1231424041213. The reversal of 1231424041155 is 5511404241321.

It is not a de Polignac number, because 1231424041155 - 2¹ = 1231424041153 is a prime.

It is a super-2 number, since 2×1231424041155² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1231424041153) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3300660 + ... + 3654750.

It is an arithmetic number, because the mean of its divisors is an integer number (38394903744).

Almost surely, 2^{1231424041155} is an apocalyptic number.

1231424041155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1231424041155 is a deficient number, since it is larger than the sum of its proper divisors (1225849798461).

1231424041155 is a wasteful number, since it uses less digits than its factorization.

1231424041155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357128.

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 1231424041155 its reverse (5511404241321), we get a palindrome (6742828282476).

The spelling of 1231424041155 in words is "one trillion, two hundred thirty-one billion, four hundred twenty-four million, forty-one thousand, one hundred fifty-five".