1200730531 has 32 divisors (see below), whose sum is σ = 1615574016. Its totient is φ = 861840000.

The previous prime is 1200730513. The next prime is 1200730541. The reversal of 1200730531 is 1350370021.

It is not a de Polignac number, because 1200730531 - 2¹³ = 1200722339 is a prime.

It is a super-2 number, since 2×1200730531² = 2883507616151083922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1200730541) 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, 630681 + ... + 632581.

It is an arithmetic number, because the mean of its divisors is an integer number (50486688).

Almost surely, 2^1200730531 is an apocalyptic number.

1200730531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1200730531 is a deficient number, since it is larger than the sum of its proper divisors (414843485).

1200730531 is a wasteful number, since it uses less digits than its factorization.

1200730531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 1200730531 is about 34651.5588538236. The cubic root of 1200730531 is about 1062.8741657239.

The spelling of 1200730531 in words is "one billion, two hundred million, seven hundred thirty thousand, five hundred thirty-one".