1121031311231 has 8 divisors (see below), whose sum is σ = 1207510486560. Its totient is φ = 1034587278432.

The previous prime is 1121031311209. The next prime is 1121031311243. The reversal of 1121031311231 is 1321131301211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121031311231 - 2⁶ = 1121031311167 is a prime.

It is a super-2 number, since 2×1121031311231² (a number of 25 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 (1121031311201) 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, 8719355 + ... + 8846988.

It is an arithmetic number, because the mean of its divisors is an integer number (150938810820).

Almost surely, 2^{1121031311231} is an apocalyptic number.

1121031311231 is a deficient number, since it is larger than the sum of its proper divisors (86479175329).

1121031311231 is a wasteful number, since it uses less digits than its factorization.

1121031311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17571265.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1121031311231 its reverse (1321131301211), we get a palindrome (2442162612442).

The spelling of 1121031311231 in words is "one trillion, one hundred twenty-one billion, thirty-one million, three hundred eleven thousand, two hundred thirty-one".