15312111323234 has 32 divisors (see below), whose sum is σ = 25590165601536. Its totient is φ = 6811731976320.

The previous prime is 15312111323219. The next prime is 15312111323239. The reversal of 15312111323234 is 43232311121351.

It is a happy number.

It is a super-2 number, since 2×15312111323234² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15312111323234.

It is not an unprimeable number, because it can be changed into a prime (15312111323239) 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, 32062022 + ... + 32536094.

It is an arithmetic number, because the mean of its divisors is an integer number (799692675048).

Almost surely, 2^{15312111323234} is an apocalyptic number.

15312111323234 is a deficient number, since it is larger than the sum of its proper divisors (10278054278302).

15312111323234 is a wasteful number, since it uses less digits than its factorization.

15312111323234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505370.

The product of its digits is 12960, while the sum is 32.

Adding to 15312111323234 its reverse (43232311121351), we get a palindrome (58544422444585).

The spelling of 15312111323234 in words is "fifteen trillion, three hundred twelve billion, one hundred eleven million, three hundred twenty-three thousand, two hundred thirty-four".