11203891431 has 8 divisors (see below), whose sum is σ = 14939762160. Its totient is φ = 7468640832.

The previous prime is 11203891409. The next prime is 11203891441. The reversal of 11203891431 is 13419830211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11203891431 - 2¹¹ = 11203889383 is a prime.

It is a super-2 number, since 2×11203891431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11203891392 and 11203891401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203891441) 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, 111096 + ... + 186413.

It is an arithmetic number, because the mean of its divisors is an integer number (1867470270).

Almost surely, 2^11203891431 is an apocalyptic number.

11203891431 is a deficient number, since it is larger than the sum of its proper divisors (3735870729).

11203891431 is a wasteful number, since it uses less digits than its factorization.

11203891431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310065.

The product of its (nonzero) digits is 5184, while the sum is 33.

The spelling of 11203891431 in words is "eleven billion, two hundred three million, eight hundred ninety-one thousand, four hundred thirty-one".