3121111348 has 6 divisors (see below), whose sum is σ = 5461944866. Its totient is φ = 1560555672.

The previous prime is 3121111321. The next prime is 3121111349. The reversal of 3121111348 is 8431111213.

It can be written as a sum of positive squares in only one way, i.e., 3071154724 + 49956624 = 55418^2 + 7068^2 .

It is a super-2 number, since 2×3121111348² = 19482672093228754208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121111349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390138915 + ... + 390138922.

Almost surely, 2^3121111348 is an apocalyptic number.

It is an amenable number.

3121111348 is a deficient number, since it is larger than the sum of its proper divisors (2340833518).

3121111348 is a wasteful number, since it uses less digits than its factorization.

3121111348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780277841 (or 780277839 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

The square root of 3121111348 is about 55866.9074497596. The cubic root of 3121111348 is about 1461.4021913972.

The spelling of 3121111348 in words is "three billion, one hundred twenty-one million, one hundred eleven thousand, three hundred forty-eight".