31421150 has 12 divisors (see below), whose sum is σ = 58443432. Its totient is φ = 12568440.

The previous prime is 31421141. The next prime is 31421153. The reversal of 31421150 is 5112413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31421153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 314162 + ... + 314261.

It is an arithmetic number, because the mean of its divisors is an integer number (4870286).

Almost surely, 2^31421150 is an apocalyptic number.

31421150 is a deficient number, since it is larger than the sum of its proper divisors (27022282).

31421150 is a wasteful number, since it uses less digits than its factorization.

31421150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628435 (or 628430 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 31421150 is about 5605.4571624445. The cubic root of 31421150 is about 315.5542438523.

Adding to 31421150 its reverse (5112413), we get a palindrome (36533563).

The spelling of 31421150 in words is "thirty-one million, four hundred twenty-one thousand, one hundred fifty".