613231406 has 4 divisors (see below), whose sum is σ = 919847112. Its totient is φ = 306615702.

The previous prime is 613231397. The next prime is 613231433. The reversal of 613231406 is 604132316.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153307850 + ... + 153307853.

It is an arithmetic number, because the mean of its divisors is an integer number (229961778).

Almost surely, 2^613231406 is an apocalyptic number.

613231406 is a deficient number, since it is larger than the sum of its proper divisors (306615706).

613231406 is a wasteful number, since it uses less digits than its factorization.

613231406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306615705.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 613231406 is about 24763.5095654877. The cubic root of 613231406 is about 849.5875304433.

The spelling of 613231406 in words is "six hundred thirteen million, two hundred thirty-one thousand, four hundred six".