3121351453 has 24 divisors (see below), whose sum is σ = 3646875960. Its totient is φ = 2660275200.

The previous prime is 3121351439. The next prime is 3121351501. The reversal of 3121351453 is 3541531213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1044453124 + 2076898329 = 32318^2 + 45573^2 .

It is not a de Polignac number, because 3121351453 - 2⁵ = 3121351421 is a prime.

It is a super-2 number, since 2×3121351453² = 19485669786290422418, which 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 (3121351253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 550513 + ... + 556153.

It is an arithmetic number, because the mean of its divisors is an integer number (151953165).

Almost surely, 2^3121351453 is an apocalyptic number.

It is an amenable number.

3121351453 is a deficient number, since it is larger than the sum of its proper divisors (525524507).

3121351453 is a wasteful number, since it uses less digits than its factorization.

3121351453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5949 (or 5938 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 3121351453 is about 55869.0563102689. The cubic root of 3121351453 is about 1461.4396653327.

Adding to 3121351453 its reverse (3541531213), we get a palindrome (6662882666).

The spelling of 3121351453 in words is "three billion, one hundred twenty-one million, three hundred fifty-one thousand, four hundred fifty-three".