31113741 has 4 divisors (see below), whose sum is σ = 41484992. Its totient is φ = 20742492.

The previous prime is 31113713. The next prime is 31113749. The reversal of 31113741 is 14731113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14731113 = 3 ⋅4910371.

It is not a de Polignac number, because 31113741 - 2⁷ = 31113613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113749) 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, 5185621 + ... + 5185626.

It is an arithmetic number, because the mean of its divisors is an integer number (10371248).

Almost surely, 2^31113741 is an apocalyptic number.

It is an amenable number.

31113741 is a deficient number, since it is larger than the sum of its proper divisors (10371251).

31113741 is a wasteful number, since it uses less digits than its factorization.

31113741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10371250.

The product of its digits is 252, while the sum is 21.

The square root of 31113741 is about 5577.9692541282. The cubic root of 31113741 is about 314.5217939221.

Adding to 31113741 its reverse (14731113), we get a palindrome (45844854).

The spelling of 31113741 in words is "thirty-one million, one hundred thirteen thousand, seven hundred forty-one".