31461123 has 16 divisors (see below), whose sum is σ = 42847616. Its totient is φ = 20528640.

The previous prime is 31461113. The next prime is 31461127. The reversal of 31461123 is 32116413.

It is a de Polignac number, because none of the positive numbers 2^k-31461123 is a prime.

It is a super-2 number, since 2×31461123² = 1979604520842258, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 31461123.

It is not an unprimeable number, because it can be changed into a prime (31461127) 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, 38388 + ... + 39198.

It is an arithmetic number, because the mean of its divisors is an integer number (2677976).

Almost surely, 2^31461123 is an apocalyptic number.

31461123 is a deficient number, since it is larger than the sum of its proper divisors (11386493).

31461123 is a wasteful number, since it uses less digits than its factorization.

31461123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074.

The product of its digits is 432, while the sum is 21.

The square root of 31461123 is about 5609.0215724313. The cubic root of 31461123 is about 315.6879998805.

Adding to 31461123 its reverse (32116413), we get a palindrome (63577536).

The spelling of 31461123 in words is "thirty-one million, four hundred sixty-one thousand, one hundred twenty-three".