2520340431 has 24 divisors (see below), whose sum is σ = 3911451264. Its totient is φ = 1439328240.

The previous prime is 2520340421. The next prime is 2520340441. The reversal of 2520340431 is 1340430252.

It is an interprime number because it is at equal distance from previous prime (2520340421) and next prime (2520340441).

It is not a de Polignac number, because 2520340431 - 2⁵ = 2520340399 is a prime.

It is a super-2 number, since 2×2520340431² = 12704231776266531522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520340411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 302086 + ... + 310316.

It is an arithmetic number, because the mean of its divisors is an integer number (162977136).

Almost surely, 2^2520340431 is an apocalyptic number.

2520340431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2520340431 is a deficient number, since it is larger than the sum of its proper divisors (1391110833).

2520340431 is a wasteful number, since it uses less digits than its factorization.

2520340431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10331 (or 10324 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2520340431 is about 50202.9922514585. The cubic root of 2520340431 is about 1360.8796988411.

Adding to 2520340431 its reverse (1340430252), we get a palindrome (3860770683).

The spelling of 2520340431 in words is "two billion, five hundred twenty million, three hundred forty thousand, four hundred thirty-one".