7531745331 has 64 divisors (see below), whose sum is σ = 12240115200. Its totient is φ = 4060108800.

The previous prime is 7531745327. The next prime is 7531745339. The reversal of 7531745331 is 1335471357.

It is a happy number.

It is not a de Polignac number, because 7531745331 - 2² = 7531745327 is a prime.

It is a super-2 number, since 2×7531745331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7531745331.

It is not an unprimeable number, because it can be changed into a prime (7531745339) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7045065 + ... + 7046133.

It is an arithmetic number, because the mean of its divisors is an integer number (191251800).

Almost surely, 2^7531745331 is an apocalyptic number.

7531745331 is a deficient number, since it is larger than the sum of its proper divisors (4708369869).

7531745331 is a wasteful number, since it uses less digits than its factorization.

7531745331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780.

The product of its digits is 132300, while the sum is 39.

The square root of 7531745331 is about 86785.6285971358. The cubic root of 7531745331 is about 1960.1916835821.

The spelling of 7531745331 in words is "seven billion, five hundred thirty-one million, seven hundred forty-five thousand, three hundred thirty-one".