31130053 has 4 divisors (see below), whose sum is σ = 31200768. Its totient is φ = 31059340.

The previous prime is 31130051. The next prime is 31130081. The reversal of 31130053 is 35003113.

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: 35003113 = 1901 ⋅18413.

It is a cyclic number.

It is not a de Polignac number, because 31130053 - 2¹ = 31130051 is a prime.

It is a super-4 number, since 4×31130053⁴ (a number of 31 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130051) 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, 34693 + ... + 35578.

It is an arithmetic number, because the mean of its divisors is an integer number (7800192).

Almost surely, 2^31130053 is an apocalyptic number.

It is an amenable number.

31130053 is a deficient number, since it is larger than the sum of its proper divisors (70715).

31130053 is an equidigital number, since it uses as much as digits as its factorization.

31130053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70714.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 31130053 is about 5579.4312434154. The cubic root of 31130053 is about 314.5767490964.

Adding to 31130053 its reverse (35003113), we get a palindrome (66133166).

The spelling of 31130053 in words is "thirty-one million, one hundred thirty thousand, fifty-three".