31011453 has 18 divisors (see below), whose sum is σ = 49238462. Its totient is φ = 18794160.

The previous prime is 31011443. The next prime is 31011467. The reversal of 31011453 is 35411013.

It can be written as a sum of positive squares in only one way, i.e., 25826724 + 5184729 = 5082^2 + 2277^2 .

It is not a de Polignac number, because 31011453 - 2⁴ = 31011437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31011443) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13150 + ... + 15327.

Almost surely, 2^31011453 is an apocalyptic number.

31011453 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31011453 is a deficient number, since it is larger than the sum of its proper divisors (18227009).

31011453 is a wasteful number, since it uses less digits than its factorization.

31011453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28505 (or 28491 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 31011453 is about 5568.7927776135. The cubic root of 31011453 is about 314.1767467475.

Adding to 31011453 its reverse (35411013), we get a palindrome (66422466).

It can be divided in two parts, 3101 and 1453, that added together give a palindrome (4554).

The spelling of 31011453 in words is "thirty-one million, eleven thousand, four hundred fifty-three".