3123132340 has 12 divisors (see below), whose sum is σ = 6558577956. Its totient is φ = 1249252928.

The previous prime is 3123132329. The next prime is 3123132343. The reversal of 3123132340 is 432313213.

It can be written as a sum of positive squares in 2 ways, for example, as 1171966756 + 1951165584 = 34234^2 + 44172^2 .

It is a super-2 number, since 2×3123132340² = 19507911226307751200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123132343) 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, 78078289 + ... + 78078328.

It is an arithmetic number, because the mean of its divisors is an integer number (546548163).

Almost surely, 2^3123132340 is an apocalyptic number.

It is an amenable number.

3123132340 is an abundant number, since it is smaller than the sum of its proper divisors (3435445616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3123132340 is a wasteful number, since it uses less digits than its factorization.

3123132340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156156626 (or 156156624 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 3123132340 is about 55884.9920819535. The cubic root of 3123132340 is about 1461.7175539454.

Adding to 3123132340 its reverse (432313213), we get a palindrome (3555445553).

The spelling of 3123132340 in words is "three billion, one hundred twenty-three million, one hundred thirty-two thousand, three hundred forty".