11213232031 has 4 divisors (see below), whose sum is σ = 11214525064. Its totient is φ = 11211939000.

The previous prime is 11213232029. The next prime is 11213232061. The reversal of 11213232031 is 13023231211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13023231211 = 337 ⋅38644603.

It is a cyclic number.

It is not a de Polignac number, because 11213232031 - 2¹ = 11213232029 is a prime.

It is a super-2 number, since 2×11213232031² (a number of 21 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 (11213232061) 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, 633420 + ... + 650881.

It is an arithmetic number, because the mean of its divisors is an integer number (2803631266).

Almost surely, 2^11213232031 is an apocalyptic number.

11213232031 is a deficient number, since it is larger than the sum of its proper divisors (1293033).

11213232031 is an equidigital number, since it uses as much as digits as its factorization.

11213232031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293032.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11213232031 its reverse (13023231211), we get a palindrome (24236463242).

The spelling of 11213232031 in words is "eleven billion, two hundred thirteen million, two hundred thirty-two thousand, thirty-one".