31011485 has 16 divisors (see below), whose sum is σ = 40055472. Its totient is φ = 22963200.

The previous prime is 31011479. The next prime is 31011509. The reversal of 31011485 is 58411013.

It can be written as a sum of positive squares in 8 ways, for example, as 8076964 + 22934521 = 2842^2 + 4789^2 .

It is not a de Polignac number, because 31011485 - 2⁸ = 31011229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31011485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2195 + ... + 8175.

It is an arithmetic number, because the mean of its divisors is an integer number (2503467).

Almost surely, 2^31011485 is an apocalyptic number.

It is an amenable number.

31011485 is a deficient number, since it is larger than the sum of its proper divisors (9043987).

31011485 is a wasteful number, since it uses less digits than its factorization.

31011485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6064.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 31011485 is about 5568.7956507669. The cubic root of 31011485 is about 314.1768548114.

Adding to 31011485 its reverse (58411013), we get a palindrome (89422498).

The spelling of 31011485 in words is "thirty-one million, eleven thousand, four hundred eighty-five".