1961750231 has 12 divisors (see below), whose sum is σ = 2293631208. Its totient is φ = 1672956432.

The previous prime is 1961750227. The next prime is 1961750251. The reversal of 1961750231 is 1320571691.

It is not a de Polignac number, because 1961750231 - 2² = 1961750227 is a prime.

It is a super-2 number, since 2×1961750231² = 7696927937657106722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1961750191 and 1961750200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961750251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91961 + ... + 111266.

It is an arithmetic number, because the mean of its divisors is an integer number (191135934).

Almost surely, 2^1961750231 is an apocalyptic number.

1961750231 is a deficient number, since it is larger than the sum of its proper divisors (331880977).

1961750231 is a wasteful number, since it uses less digits than its factorization.

1961750231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203438 (or 203431 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 1961750231 is about 44291.6496757572. The cubic root of 1961750231 is about 1251.8373472808.

The spelling of 1961750231 in words is "one billion, nine hundred sixty-one million, seven hundred fifty thousand, two hundred thirty-one".