31741341921 has 9 divisors (see below), whose sum is σ = 45849377041. Its totient is φ = 21160538292.

The previous prime is 31741341901. The next prime is 31741341941. The reversal of 31741341921 is 12914314713.

It is a happy number.

The square root of 31741341921 is 178161.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (31741341901) and next prime (31741341941).

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 31741341921 - 2¹¹ = 31741339873 is a prime.

It is a super-3 number, since 3×31741341921³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31741341901) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 504790 + ... + 564176.

Almost surely, 2^31741341921 is an apocalyptic number.

31741341921 is the 178161-st square number.

31741341921 is the 89081-st centered octagonal number.

It is an amenable number.

31741341921 is a deficient number, since it is larger than the sum of its proper divisors (14108035120).

31741341921 is an frugal number, since it uses more digits than its factorization.

31741341921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118780 (or 59390 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

Multiplying 31741341921 by its sum of digits (36), we get a square (1142688309156 = 1068966²).

The spelling of 31741341921 in words is "thirty-one billion, seven hundred forty-one million, three hundred forty-one thousand, nine hundred twenty-one".