2131311022 has 4 divisors (see below), whose sum is σ = 3196966536. Its totient is φ = 1065655510.

The previous prime is 2131311011. The next prime is 2131311067. The reversal of 2131311022 is 2201131312.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2131310987 and 2131311005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532827754 + ... + 532827757.

It is an arithmetic number, because the mean of its divisors is an integer number (799241634).

Almost surely, 2^2131311022 is an apocalyptic number.

2131311022 is a deficient number, since it is larger than the sum of its proper divisors (1065655514).

2131311022 is a wasteful number, since it uses less digits than its factorization.

2131311022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065655513.

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

The square root of 2131311022 is about 46166.1241821316. The cubic root of 2131311022 is about 1286.9122758452.

Adding to 2131311022 its reverse (2201131312), we get a palindrome (4332442334).

The spelling of 2131311022 in words is "two billion, one hundred thirty-one million, three hundred eleven thousand, twenty-two".