31054013 has 4 divisors (see below), whose sum is σ = 31080828. Its totient is φ = 31027200.

The previous prime is 31053977. The next prime is 31054021. The reversal of 31054013 is 31045013.

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 18472804 + 12581209 = 4298^2 + 3547^2 .

It is a cyclic number.

It is not a de Polignac number, because 31054013 - 2⁶ = 31053949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31053982 and 31054000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31054043) 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, 11588 + ... + 14013.

It is an arithmetic number, because the mean of its divisors is an integer number (7770207).

Almost surely, 2^31054013 is an apocalyptic number.

It is an amenable number.

31054013 is a deficient number, since it is larger than the sum of its proper divisors (26815).

31054013 is a wasteful number, since it uses less digits than its factorization.

31054013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26814.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 31054013 is about 5572.6127624302. The cubic root of 31054013 is about 314.3204060386.

Adding to 31054013 its reverse (31045013), we get a palindrome (62099026).

The spelling of 31054013 in words is "thirty-one million, fifty-four thousand, thirteen".