730074212531 has 4 divisors (see below), whose sum is σ = 730247589864. Its totient is φ = 729900835200.

The previous prime is 730074212503. The next prime is 730074212597. The reversal of 730074212531 is 135212470037.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135212470037 = 139 ⋅972751583.

It is a cyclic number.

It is not a de Polignac number, because 730074212531 - 2²⁶ = 730007103667 is a prime.

It is a super-2 number, since 2×730074212531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 730074212491 and 730074212500.

It is not an unprimeable number, because it can be changed into a prime (730074212731) 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, 86682350 + ... + 86690771.

It is an arithmetic number, because the mean of its divisors is an integer number (182561897466).

Almost surely, 2^730074212531 is an apocalyptic number.

730074212531 is a deficient number, since it is larger than the sum of its proper divisors (173377333).

730074212531 is a wasteful number, since it uses less digits than its factorization.

730074212531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173377332.

The product of its (nonzero) digits is 35280, while the sum is 35.

Adding to 730074212531 its reverse (135212470037), we get a palindrome (865286682568).

The spelling of 730074212531 in words is "seven hundred thirty billion, seventy-four million, two hundred twelve thousand, five hundred thirty-one".