31550453253 has 24 divisors (see below), whose sum is σ = 50872055520. Its totient is φ = 18676798560.

The previous prime is 31550453213. The next prime is 31550453273. The reversal of 31550453253 is 35235405513.

31550453253 is a `hidden beast` number, since 3 + 1 + 550 + 4 + 53 + 2 + 53 = 666.

It is not a de Polignac number, because 31550453253 - 2⁶ = 31550453189 is a prime.

It is a super-2 number, since 2×31550453253² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31550453213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3701458 + ... + 3709971.

It is an arithmetic number, because the mean of its divisors is an integer number (2119668980).

Almost surely, 2^31550453253 is an apocalyptic number.

31550453253 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31550453253 is a deficient number, since it is larger than the sum of its proper divisors (19321602267).

31550453253 is a wasteful number, since it uses less digits than its factorization.

31550453253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7411489 (or 7411486 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 36.

Adding to 31550453253 its reverse (35235405513), we get a palindrome (66785858766).

The spelling of 31550453253 in words is "thirty-one billion, five hundred fifty million, four hundred fifty-three thousand, two hundred fifty-three".