31341031 has 4 divisors (see below), whose sum is σ = 32352064. Its totient is φ = 30330000.

The previous prime is 31341001. The next prime is 31341041. The reversal of 31341031 is 13014313.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31341031 is a prime.

It is a super-2 number, since 2×31341031² = 1964520448285922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31340996 and 31341014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31341001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505470 + ... + 505531.

It is an arithmetic number, because the mean of its divisors is an integer number (8088016).

Almost surely, 2^31341031 is an apocalyptic number.

31341031 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31341031 is a deficient number, since it is larger than the sum of its proper divisors (1011033).

31341031 is a wasteful number, since it uses less digits than its factorization.

31341031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011032.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 31341031 is about 5598.3060830933. The cubic root of 31341031 is about 315.2858109736.

Adding to 31341031 its reverse (13014313), we get a palindrome (44355344).

The spelling of 31341031 in words is "thirty-one million, three hundred forty-one thousand, thirty-one".