1011200531 has 16 divisors (see below), whose sum is σ = 1125508608. Its totient is φ = 900782400.

The previous prime is 1011200527. The next prime is 1011200581. The reversal of 1011200531 is 1350021101.

It is a cyclic number.

It is not a de Polignac number, because 1011200531 - 2² = 1011200527 is a prime.

It is a super-2 number, since 2×1011200531² = 2045053027789363922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011200581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126551 + ... + 134303.

It is an arithmetic number, because the mean of its divisors is an integer number (70344288).

Almost surely, 2^1011200531 is an apocalyptic number.

1011200531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1011200531 is a deficient number, since it is larger than the sum of its proper divisors (114308077).

1011200531 is a wasteful number, since it uses less digits than its factorization.

1011200531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8002.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 1011200531 is about 31799.3794121835. The cubic root of 1011200531 is about 1003.7196573278.

Adding to 1011200531 its reverse (1350021101), we get a palindrome (2361221632).

The spelling of 1011200531 in words is "one billion, eleven million, two hundred thousand, five hundred thirty-one".