31141477361 has 4 divisors (see below), whose sum is σ = 31173352932. Its totient is φ = 31109601792.

The previous prime is 31141477357. The next prime is 31141477369. The reversal of 31141477361 is 16377414113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21991407025 + 9150070336 = 148295^2 + 95656^2 .

It is a cyclic number.

It is not a de Polignac number, because 31141477361 - 2² = 31141477357 is a prime.

It is a super-2 number, since 2×31141477361² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31141477369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15936320 + ... + 15938273.

It is an arithmetic number, because the mean of its divisors is an integer number (7793338233).

Almost surely, 2^31141477361 is an apocalyptic number.

It is an amenable number.

31141477361 is a deficient number, since it is larger than the sum of its proper divisors (31875571).

31141477361 is an equidigital number, since it uses as much as digits as its factorization.

31141477361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31875570.

The product of its digits is 42336, while the sum is 38.

The spelling of 31141477361 in words is "thirty-one billion, one hundred forty-one million, four hundred seventy-seven thousand, three hundred sixty-one".