11115245400031 has 16 divisors (see below), whose sum is σ = 11550800880000. Its totient is φ = 10683207033856.

The previous prime is 11115245400001. The next prime is 11115245400137. The reversal of 11115245400031 is 13000454251111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11115245400031 - 2⁹ = 11115245399519 is a prime.

It is a super-2 number, since 2×11115245400031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115245400001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19043055 + ... + 19618063.

It is an arithmetic number, because the mean of its divisors is an integer number (721925055000).

Almost surely, 2^{11115245400031} is an apocalyptic number.

11115245400031 is a deficient number, since it is larger than the sum of its proper divisors (435555479969).

11115245400031 is a wasteful number, since it uses less digits than its factorization.

11115245400031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578066.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 11115245400031 its reverse (13000454251111), we get a palindrome (24115699651142).

The spelling of 11115245400031 in words is "eleven trillion, one hundred fifteen billion, two hundred forty-five million, four hundred thousand, thirty-one".