612231345 has 32 divisors (see below), whose sum is σ = 1187360640. Its totient is φ = 296838720.

The previous prime is 612231343. The next prime is 612231359. The reversal of 612231345 is 543132216.

612231345 is a `hidden beast` number, since 612 + 2 + 3 + 1 + 3 + 45 = 666.

It is not a de Polignac number, because 612231345 - 2¹ = 612231343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (612231343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204654 + ... + 207623.

It is an arithmetic number, because the mean of its divisors is an integer number (37105020).

Almost surely, 2^612231345 is an apocalyptic number.

It is an amenable number.

612231345 is a deficient number, since it is larger than the sum of its proper divisors (575129295).

612231345 is a wasteful number, since it uses less digits than its factorization.

612231345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412302 (or 412296 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 612231345 is about 24743.3090955919. The cubic root of 612231345 is about 849.1254418900.

The spelling of 612231345 in words is "six hundred twelve million, two hundred thirty-one thousand, three hundred forty-five".