531101145 has 32 divisors (see below), whose sum is σ = 900910080. Its totient is φ = 266699520.

The previous prime is 531101111. The next prime is 531101149. The reversal of 531101145 is 541101135.

It is a happy number.

It is not a de Polignac number, because 531101145 - 2¹¹ = 531099097 is a prime.

It is a super-2 number, since 2×531101145² = 564136852440622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531101149) 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, 1771 + ... + 32639.

It is an arithmetic number, because the mean of its divisors is an integer number (28153440).

Almost surely, 2^531101145 is an apocalyptic number.

It is an amenable number.

531101145 is a deficient number, since it is larger than the sum of its proper divisors (369808935).

531101145 is a wasteful number, since it uses less digits than its factorization.

531101145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30945.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 531101145 is about 23045.6317986728. The cubic root of 531101145 is about 809.8272989528.

The spelling of 531101145 in words is "five hundred thirty-one million, one hundred one thousand, one hundred forty-five".