31480743 has 16 divisors (see below), whose sum is σ = 49142016. Its totient is φ = 17549760.

The previous prime is 31480733. The next prime is 31480763. The reversal of 31480743 is 34708413.

It is not a de Polignac number, because 31480743 - 2¹⁰ = 31479719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31480743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31480733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17421 + ... + 19142.

It is an arithmetic number, because the mean of its divisors is an integer number (3071376).

Almost surely, 2^31480743 is an apocalyptic number.

31480743 is a deficient number, since it is larger than the sum of its proper divisors (17661273).

31480743 is a wasteful number, since it uses less digits than its factorization.

31480743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36614.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 31480743 is about 5610.7702679757. The cubic root of 31480743 is about 315.7536100778.

It can be divided in two parts, 31480 and 743, that added together give a palindrome (32223).

The spelling of 31480743 in words is "thirty-one million, four hundred eighty thousand, seven hundred forty-three".