11130020431 has 16 divisors (see below), whose sum is σ = 12045103200. Its totient is φ = 10248467328.

The previous prime is 11130020399. The next prime is 11130020441. The reversal of 11130020431 is 13402003111.

It is a cyclic number.

It is not a de Polignac number, because 11130020431 - 2⁵ = 11130020399 is a prime.

It is a super-2 number, since 2×11130020431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11130020441) 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, 704325 + ... + 719953.

It is an arithmetic number, because the mean of its divisors is an integer number (752818950).

Almost surely, 2^11130020431 is an apocalyptic number.

11130020431 is a deficient number, since it is larger than the sum of its proper divisors (915082769).

11130020431 is a wasteful number, since it uses less digits than its factorization.

11130020431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16698.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11130020431 its reverse (13402003111), we get a palindrome (24532023542).

The spelling of 11130020431 in words is "eleven billion, one hundred thirty million, twenty thousand, four hundred thirty-one".