31401125 has 32 divisors (see below), whose sum is σ = 47443968. Its totient is φ = 20256000.

The previous prime is 31401119. The next prime is 31401133. The reversal of 31401125 is 52110413.

It is not a de Polignac number, because 31401125 - 2⁶ = 31401061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13820 + ... + 15930.

It is an arithmetic number, because the mean of its divisors is an integer number (1482624).

Almost surely, 2^31401125 is an apocalyptic number.

31401125 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31401125 is a deficient number, since it is larger than the sum of its proper divisors (16042843).

31401125 is a wasteful number, since it uses less digits than its factorization.

31401125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150 (or 2140 counting only the distinct ones).

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

The square root of 31401125 is about 5603.6706719792. The cubic root of 31401125 is about 315.4871943587.

Adding to 31401125 its reverse (52110413), we get a palindrome (83511538).

The spelling of 31401125 in words is "thirty-one million, four hundred one thousand, one hundred twenty-five".