31421196 has 30 divisors (see below), whose sum is σ = 82142060. Its totient is φ = 10473624.

The previous prime is 31421189. The next prime is 31421213. The reversal of 31421196 is 69112413.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 48166 + ... + 48813.

Almost surely, 2^31421196 is an apocalyptic number.

31421196 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31421196 is an abundant number, since it is smaller than the sum of its proper divisors (50720864).

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

31421196 is a wasteful number, since it uses less digits than its factorization.

31421196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96995 (or 96984 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 31421196 is about 5605.4612655873. The cubic root of 31421196 is about 315.5543978408.

It can be divided in two parts, 31421 and 196, that multiplied together give a palindrome (6158516).

The spelling of 31421196 in words is "thirty-one million, four hundred twenty-one thousand, one hundred ninety-six".