2101350531 has 64 divisors (see below), whose sum is σ = 3406954496. Its totient is φ = 1126742400.

The previous prime is 2101350529. The next prime is 2101350623. The reversal of 2101350531 is 1350531012.

It is not a de Polignac number, because 2101350531 - 2¹ = 2101350529 is a prime.

It is a super-2 number, since 2×2101350531² = 8831348108267963922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101350498 and 2101350507.

It is not an unprimeable number, because it can be changed into a prime (2101350131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7585965 + ... + 7586241.

It is an arithmetic number, because the mean of its divisors is an integer number (53233664).

Almost surely, 2^2101350531 is an apocalyptic number.

2101350531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2101350531 is a deficient number, since it is larger than the sum of its proper divisors (1305603965).

2101350531 is a wasteful number, since it uses less digits than its factorization.

2101350531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 2101350531 is about 45840.4900824588. The cubic root of 2101350531 is about 1280.8536239157.

Adding to 2101350531 its reverse (1350531012), we get a palindrome (3451881543).

The spelling of 2101350531 in words is "two billion, one hundred one million, three hundred fifty thousand, five hundred thirty-one".