31452045 has 16 divisors (see below), whose sum is σ = 50395392. Its totient is φ = 16750400.

The previous prime is 31452041. The next prime is 31452061. The reversal of 31452045 is 54025413.

It is not a de Polignac number, because 31452045 - 2² = 31452041 is a prime.

It is a super-2 number, since 2×31452045² = 1978462269364050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31452041) 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, 15595 + ... + 17495.

It is an arithmetic number, because the mean of its divisors is an integer number (3149712).

Almost surely, 2^31452045 is an apocalyptic number.

It is an amenable number.

31452045 is a deficient number, since it is larger than the sum of its proper divisors (18943347).

31452045 is a wasteful number, since it uses less digits than its factorization.

31452045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 31452045 is about 5608.2122820022. The cubic root of 31452045 is about 315.6576333935.

Adding to 31452045 its reverse (54025413), we get a palindrome (85477458).

The spelling of 31452045 in words is "thirty-one million, four hundred fifty-two thousand, forty-five".