31214100 has 36 divisors (see below), whose sum is σ = 90313664. Its totient is φ = 8323680.

The previous prime is 31214081. The next prime is 31214101. The reversal of 31214100 is 141213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31214101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51724 + ... + 52323.

Almost surely, 2^31214100 is an apocalyptic number.

31214100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31214100 is an abundant number, since it is smaller than the sum of its proper divisors (59099564).

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

31214100 is a wasteful number, since it uses less digits than its factorization.

31214100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104064 (or 104057 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 31214100 is about 5586.9580274063. The cubic root of 31214100 is about 314.8595998143.

Adding to 31214100 its reverse (141213), we get a palindrome (31355313).

The spelling of 31214100 in words is "thirty-one million, two hundred fourteen thousand, one hundred".