113121332031 has 4 divisors (see below), whose sum is σ = 150828442712. Its totient is φ = 75414221352.

The previous prime is 113121332029. The next prime is 113121332033. The reversal of 113121332031 is 130233121311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130233121311 = 3 ⋅43411040437.

It is an interprime number because it is at equal distance from previous prime (113121332029) and next prime (113121332033).

It is not a de Polignac number, because 113121332031 - 2¹ = 113121332029 is a prime.

It is a super-2 number, since 2×113121332031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113121331989 and 113121332007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113121332033) 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, 18853555336 + ... + 18853555341.

It is an arithmetic number, because the mean of its divisors is an integer number (37707110678).

Almost surely, 2^113121332031 is an apocalyptic number.

113121332031 is a deficient number, since it is larger than the sum of its proper divisors (37707110681).

113121332031 is an equidigital number, since it uses as much as digits as its factorization.

113121332031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37707110680.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 113121332031 its reverse (130233121311), we get a palindrome (243354453342).

The spelling of 113121332031 in words is "one hundred thirteen billion, one hundred twenty-one million, three hundred thirty-two thousand, thirty-one".