31415045 has 4 divisors (see below), whose sum is σ = 37698060. Its totient is φ = 25132032.

The previous prime is 31415029. The next prime is 31415053. The reversal of 31415045 is 54051413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20511841 + 10903204 = 4529^2 + 3302^2 .

It is a cyclic number.

It is not a de Polignac number, because 31415045 - 2⁴ = 31415029 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31415045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3141500 + ... + 3141509.

It is an arithmetic number, because the mean of its divisors is an integer number (9424515).

Almost surely, 2^31415045 is an apocalyptic number.

It is an amenable number.

31415045 is a deficient number, since it is larger than the sum of its proper divisors (6283015).

31415045 is an equidigital number, since it uses as much as digits as its factorization.

31415045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6283014.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 31415045 is about 5604.9125773735. The cubic root of 31415045 is about 315.5338055654.

Adding to 31415045 its reverse (54051413), we get a palindrome (85466458).

The spelling of 31415045 in words is "thirty-one million, four hundred fifteen thousand, forty-five".