2031625361 has 4 divisors (see below), whose sum is σ = 2032799412. Its totient is φ = 2030451312.

The previous prime is 2031625319. The next prime is 2031625391. The reversal of 2031625361 is 1635261302.

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 1056250000 + 975375361 = 32500^2 + 31231^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2031625361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2031625301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584426 + ... + 587891.

It is an arithmetic number, because the mean of its divisors is an integer number (508199853).

Almost surely, 2^2031625361 is an apocalyptic number.

It is an amenable number.

2031625361 is a deficient number, since it is larger than the sum of its proper divisors (1174051).

2031625361 is a wasteful number, since it uses less digits than its factorization.

2031625361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174050.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 2031625361 is about 45073.5550073433. Note that the first 3 decimals coincide. The cubic root of 2031625361 is about 1266.5272603350.

Adding to 2031625361 its reverse (1635261302), we get a palindrome (3666886663).

The spelling of 2031625361 in words is "two billion, thirty-one million, six hundred twenty-five thousand, three hundred sixty-one".