730151631 has 24 divisors (see below), whose sum is σ = 1188988080. Its totient is φ = 442514160.

The previous prime is 730151593. The next prime is 730151633. The reversal of 730151631 is 136151037.

It is not a de Polignac number, because 730151631 - 2¹⁰ = 730150607 is a prime.

It is a super-2 number, since 2×730151631² = 1066242808503920322, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 730151595 and 730151604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730151633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108480 + ... + 115013.

It is an arithmetic number, because the mean of its divisors is an integer number (49541170).

Almost surely, 2^730151631 is an apocalyptic number.

730151631 is a deficient number, since it is larger than the sum of its proper divisors (458836449).

730151631 is a wasteful number, since it uses less digits than its factorization.

730151631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223524 (or 223507 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 730151631 is about 27021.3180840610. The cubic root of 730151631 is about 900.4736728829.

The spelling of 730151631 in words is "seven hundred thirty million, one hundred fifty-one thousand, six hundred thirty-one".