31034621 has 8 divisors (see below), whose sum is σ = 31459584. Its totient is φ = 30612240.

The previous prime is 31034603. The next prime is 31034623. The reversal of 31034621 is 12643013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31034621 is a prime.

It is a super-2 number, since 2×31034621² = 1926295401227282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31034593 and 31034602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31034623) 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, 37391 + ... + 38211.

It is an arithmetic number, because the mean of its divisors is an integer number (3932448).

Almost surely, 2^31034621 is an apocalyptic number.

It is an amenable number.

31034621 is a deficient number, since it is larger than the sum of its proper divisors (424963).

31034621 is a wasteful number, since it uses less digits than its factorization.

31034621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 31034621 is about 5570.8725528413. The cubic root of 31034621 is about 314.2549655376.

Adding to 31034621 its reverse (12643013), we get a palindrome (43677634).

The spelling of 31034621 in words is "thirty-one million, thirty-four thousand, six hundred twenty-one".