615122431 has 12 divisors (see below), whose sum is σ = 780601320. Its totient is φ = 479315760.

The previous prime is 615122413. The next prime is 615122471. The reversal of 615122431 is 134221516.

It is a happy number.

It is not a de Polignac number, because 615122431 - 2¹⁵ = 615089663 is a prime.

It is a super-2 number, since 2×615122431² = 756751210238699522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 615122396 and 615122405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615122411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 570076 + ... + 571153.

It is an arithmetic number, because the mean of its divisors is an integer number (65050110).

Almost surely, 2^615122431 is an apocalyptic number.

615122431 is a deficient number, since it is larger than the sum of its proper divisors (165478889).

615122431 is a wasteful number, since it uses less digits than its factorization.

615122431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141254 (or 1141247 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 615122431 is about 24801.6618596416. The cubic root of 615122431 is about 850.4599268716.

Adding to 615122431 its reverse (134221516), we get a palindrome (749343947).

It can be divided in two parts, 6151 and 22431, that added together give a palindrome (28582).

The spelling of 615122431 in words is "six hundred fifteen million, one hundred twenty-two thousand, four hundred thirty-one".