31194045 has 16 divisors (see below), whose sum is σ = 55456320. Its totient is φ = 16636752.

The previous prime is 31194043. The next prime is 31194073. The reversal of 31194045 is 54049113.

It is not a de Polignac number, because 31194045 - 2¹ = 31194043 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31194043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115399 + ... + 115668.

It is an arithmetic number, because the mean of its divisors is an integer number (3466020).

Almost surely, 2^31194045 is an apocalyptic number.

It is an amenable number.

31194045 is a deficient number, since it is larger than the sum of its proper divisors (24262275).

31194045 is a wasteful number, since it uses less digits than its factorization.

31194045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231081 (or 231075 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 31194045 is about 5585.1629340602. The cubic root of 31194045 is about 314.7921531357.

The spelling of 31194045 in words is "thirty-one million, one hundred ninety-four thousand, forty-five".