613551431 has 4 divisors (see below), whose sum is σ = 613692072. Its totient is φ = 613410792.

The previous prime is 613551409. The next prime is 613551451. The reversal of 613551431 is 134155316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 613551431 - 2¹⁴ = 613535047 is a prime.

It is a super-2 number, since 2×613551431² = 752890716964295522, 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 = 613551394 and 613551403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613551451) 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, 63560 + ... + 72573.

It is an arithmetic number, because the mean of its divisors is an integer number (153423018).

Almost surely, 2^613551431 is an apocalyptic number.

613551431 is a deficient number, since it is larger than the sum of its proper divisors (140641).

613551431 is a wasteful number, since it uses less digits than its factorization.

613551431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140640.

The product of its digits is 5400, while the sum is 29.

The square root of 613551431 is about 24769.9703471764. The cubic root of 613551431 is about 849.7352951989.

The spelling of 613551431 in words is "six hundred thirteen million, five hundred fifty-one thousand, four hundred thirty-one".