31481149 has 8 divisors (see below), whose sum is σ = 36178688. Its totient is φ = 26833680.

The previous prime is 31481143. The next prime is 31481159. The reversal of 31481149 is 94118413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31481149 - 2¹¹ = 31479101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31481149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31481143) 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, 11157 + ... + 13690.

It is an arithmetic number, because the mean of its divisors is an integer number (4522336).

Almost surely, 2^31481149 is an apocalyptic number.

It is an amenable number.

31481149 is a deficient number, since it is larger than the sum of its proper divisors (4697539).

31481149 is a wasteful number, since it uses less digits than its factorization.

31481149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25035.

The product of its digits is 3456, while the sum is 31.

The square root of 31481149 is about 5610.8064482746. The cubic root of 31481149 is about 315.7549674728.

The spelling of 31481149 in words is "thirty-one million, four hundred eighty-one thousand, one hundred forty-nine".