31105403214 has 16 divisors (see below), whose sum is σ = 62212787328. Its totient is φ = 10368137592.

The previous prime is 31105403213. The next prime is 31105403237. The reversal of 31105403214 is 41230450113.

It is a happy number.

It is a super-2 number, since 2×31105403214² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31105403213) 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, 191679 + ... + 314565.

It is an arithmetic number, because the mean of its divisors is an integer number (3888299208).

Almost surely, 2^31105403214 is an apocalyptic number.

31105403214 is an abundant number, since it is smaller than the sum of its proper divisors (31107384114).

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

31105403214 is a wasteful number, since it uses less digits than its factorization.

31105403214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165079.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 31105403214 its reverse (41230450113), we get a palindrome (72335853327).

The spelling of 31105403214 in words is "thirty-one billion, one hundred five million, four hundred three thousand, two hundred fourteen".