1232311155402 has 16 divisors (see below), whose sum is σ = 2487656165472. Its totient is φ = 406931409360.

The previous prime is 1232311155391. The next prime is 1232311155403. The reversal of 1232311155402 is 2045511132321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1232311155402.

It is not an unprimeable number, because it can be changed into a prime (1232311155403) 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, 959743249 + ... + 959744532.

It is an arithmetic number, because the mean of its divisors is an integer number (155478510342).

Almost surely, 2^{1232311155402} is an apocalyptic number.

1232311155402 is an abundant number, since it is smaller than the sum of its proper divisors (1255345010070).

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

1232311155402 is a wasteful number, since it uses less digits than its factorization.

1232311155402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919487893.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 1232311155402 its reverse (2045511132321), we get a palindrome (3277822287723).

The spelling of 1232311155402 in words is "one trillion, two hundred thirty-two billion, three hundred eleven million, one hundred fifty-five thousand, four hundred two".