315212361111 has 80 divisors (see below), whose sum is σ = 525475624960. Its totient is φ = 187451444160.

The previous prime is 315212361097. The next prime is 315212361131. The reversal of 315212361111 is 111163212513.

315212361111 is a `hidden beast` number, since 3 + 1 + 5 + 21 + 23 + 611 + 1 + 1 = 666.

It is not a de Polignac number, because 315212361111 - 2²¹ = 315210263959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315212361131) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1675950 + ... + 1854516.

It is an arithmetic number, because the mean of its divisors is an integer number (6568445312).

Almost surely, 2^315212361111 is an apocalyptic number.

315212361111 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

315212361111 is a deficient number, since it is larger than the sum of its proper divisors (210263263849).

315212361111 is a wasteful number, since it uses less digits than its factorization.

315212361111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178666 (or 178657 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

Adding to 315212361111 its reverse (111163212513), we get a palindrome (426375573624).

The spelling of 315212361111 in words is "three hundred fifteen billion, two hundred twelve million, three hundred sixty-one thousand, one hundred eleven".