31121214 has 32 divisors (see below), whose sum is σ = 64671264. Its totient is φ = 9976320.

The previous prime is 31121197. The next prime is 31121249. The reversal of 31121214 is 41212113.

It is a junction number, because it is equal to n+sod(n) for n = 31121193 and 31121202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17092 + ... + 18824.

It is an arithmetic number, because the mean of its divisors is an integer number (2020977).

Almost surely, 2^31121214 is an apocalyptic number.

31121214 is an abundant number, since it is smaller than the sum of its proper divisors (33550050).

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

31121214 is a wasteful number, since it uses less digits than its factorization.

31121214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852.

The product of its digits is 48, while the sum is 15.

The square root of 31121214 is about 5578.6390813531. The cubic root of 31121214 is about 314.5469728638.

Adding to 31121214 its reverse (41212113), we get a palindrome (72333327).

The spelling of 31121214 in words is "thirty-one million, one hundred twenty-one thousand, two hundred fourteen".