612020731 has 24 divisors (see below), whose sum is σ = 746328800. Its totient is φ = 501632208.

The previous prime is 612020729. The next prime is 612020741. The reversal of 612020731 is 137020216.

It is not a de Polignac number, because 612020731 - 2¹ = 612020729 is a prime.

It is a super-2 number, since 2×612020731² = 749138750347548722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (612020701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179761 + ... + 183133.

Almost surely, 2^612020731 is an apocalyptic number.

612020731 is a deficient number, since it is larger than the sum of its proper divisors (134308069).

612020731 is an equidigital number, since it uses as much as digits as its factorization.

612020731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3440 (or 3403 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 612020731 is about 24739.0527506613. The cubic root of 612020731 is about 849.0280613717.

Adding to 612020731 its reverse (137020216), we get a palindrome (749040947).

The spelling of 612020731 in words is "six hundred twelve million, twenty thousand, seven hundred thirty-one".