2113442331 has 128 divisors (see below), whose sum is σ = 4059611136. Its totient is φ = 942036480.

The previous prime is 2113442323. The next prime is 2113442341. The reversal of 2113442331 is 1332443112.

It is a happy number.

It is not a de Polignac number, because 2113442331 - 2³ = 2113442323 is a prime.

It is a super-2 number, since 2×2113442331² = 8933276972925427122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2113442341) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2555140 + ... + 2555966.

It is an arithmetic number, because the mean of its divisors is an integer number (31715712).

Almost surely, 2^2113442331 is an apocalyptic number.

2113442331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2113442331 is a deficient number, since it is larger than the sum of its proper divisors (1946168805).

2113442331 is a wasteful number, since it uses less digits than its factorization.

2113442331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921.

The product of its digits is 1728, while the sum is 24.

The square root of 2113442331 is about 45972.1908440309. The cubic root of 2113442331 is about 1283.3057315853.

Adding to 2113442331 its reverse (1332443112), we get a palindrome (3445885443).

It can be divided in two parts, 2113 and 442331, that added together give a palindrome (444444).

The spelling of 2113442331 in words is "two billion, one hundred thirteen million, four hundred forty-two thousand, three hundred thirty-one".