3121432431 has 8 divisors (see below), whose sum is σ = 4482056880. Its totient is φ = 1920881472.

The previous prime is 3121432417. The next prime is 3121432451. The reversal of 3121432431 is 1342341213.

It is a happy number.

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

It is not a de Polignac number, because 3121432431 - 2⁵ = 3121432399 is a prime.

It is a super-2 number, since 2×3121432431² = 19486680842597139522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121432411) 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, 40018326 + ... + 40018403.

It is an arithmetic number, because the mean of its divisors is an integer number (560257110).

Almost surely, 2^3121432431 is an apocalyptic number.

3121432431 is a deficient number, since it is larger than the sum of its proper divisors (1360624449).

3121432431 is a wasteful number, since it uses less digits than its factorization.

3121432431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80036745.

The product of its digits is 1728, while the sum is 24.

The square root of 3121432431 is about 55869.7810180065. The cubic root of 3121432431 is about 1461.4523033881.

Adding to 3121432431 its reverse (1342341213), we get a palindrome (4463773644).

The spelling of 3121432431 in words is "three billion, one hundred twenty-one million, four hundred thirty-two thousand, four hundred thirty-one".