31030641 has 8 divisors (see below), whose sum is σ = 45971360. Its totient is φ = 20687076.

The previous prime is 31030631. The next prime is 31030663. The reversal of 31030641 is 14603013.

It is not a de Polignac number, because 31030641 - 2⁶ = 31030577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31030631) 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, 574615 + ... + 574668.

It is an arithmetic number, because the mean of its divisors is an integer number (5746420).

Almost surely, 2^31030641 is an apocalyptic number.

It is an amenable number.

31030641 is a deficient number, since it is larger than the sum of its proper divisors (14940719).

31030641 is a wasteful number, since it uses less digits than its factorization.

31030641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149292 (or 1149286 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 31030641 is about 5570.5153262512. The cubic root of 31030641 is about 314.2415312053.

Adding to 31030641 its reverse (14603013), we get a palindrome (45633654).

The spelling of 31030641 in words is "thirty-one million, thirty thousand, six hundred forty-one".