113142251 has 4 divisors (see below), whose sum is σ = 114997104. Its totient is φ = 111287400.

The previous prime is 113142233. The next prime is 113142257. The reversal of 113142251 is 152241311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113142251 is a prime.

It is a super-2 number, since 2×113142251² = 25602337922694002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113142257) 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, 927335 + ... + 927456.

It is an arithmetic number, because the mean of its divisors is an integer number (28749276).

Almost surely, 2^113142251 is an apocalyptic number.

113142251 is a deficient number, since it is larger than the sum of its proper divisors (1854853).

113142251 is an equidigital number, since it uses as much as digits as its factorization.

113142251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854852.

The product of its digits is 240, while the sum is 20.

The square root of 113142251 is about 10636.8346325399. The cubic root of 113142251 is about 483.6615963733.

Adding to 113142251 its reverse (152241311), we get a palindrome (265383562).

The spelling of 113142251 in words is "one hundred thirteen million, one hundred forty-two thousand, two hundred fifty-one".