31425198 has 16 divisors (see below), whose sum is σ = 71829120. Its totient is φ = 8978616.

The previous prime is 31425193. The next prime is 31425209. The reversal of 31425198 is 89152413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425193) 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, 374068 + ... + 374151.

It is an arithmetic number, because the mean of its divisors is an integer number (4489320).

Almost surely, 2^31425198 is an apocalyptic number.

31425198 is an abundant number, since it is smaller than the sum of its proper divisors (40403922).

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

31425198 is a wasteful number, since it uses less digits than its factorization.

31425198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748231.

The product of its digits is 8640, while the sum is 33.

The square root of 31425198 is about 5605.8182275204. The cubic root of 31425198 is about 315.5677942659.

The spelling of 31425198 in words is "thirty-one million, four hundred twenty-five thousand, one hundred ninety-eight".