11311244142 has 16 divisors (see below), whose sum is σ = 24679078272. Its totient is φ = 3427649720.

The previous prime is 11311244101. The next prime is 11311244149. The reversal of 11311244142 is 24144211311.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311244149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85691178 + ... + 85691309.

It is an arithmetic number, because the mean of its divisors is an integer number (1542442392).

Almost surely, 2^11311244142 is an apocalyptic number.

11311244142 is an abundant number, since it is smaller than the sum of its proper divisors (13367834130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11311244142 is a wasteful number, since it uses less digits than its factorization.

11311244142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171382503.

The product of its digits is 768, while the sum is 24.

Adding to 11311244142 its reverse (24144211311), we get a palindrome (35455455453).

The spelling of 11311244142 in words is "eleven billion, three hundred eleven million, two hundred forty-four thousand, one hundred forty-two".