31541230641000 has 256 divisors, whose sum is σ = 102286053192960. Its totient is φ = 8085069849600.

The previous prime is 31541230640989. The next prime is 31541230641007. The reversal of 31541230641000 is 14603214513.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (31541230641007) 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, 7501222 + ... + 10924778.

It is an arithmetic number, because the mean of its divisors is an integer number (399554895285).

Almost surely, 2^{31541230641000} is an apocalyptic number.

31541230641000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31541230641000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51143026596480).

31541230641000 is an abundant number, since it is smaller than the sum of its proper divisors (70744822551960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31541230641000 is a wasteful number, since it uses less digits than its factorization.

31541230641000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423701 (or 3423687 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 31541230641000 its reverse (14603214513), we get a palindrome (31555833855513).

The spelling of 31541230641000 in words is "thirty-one trillion, five hundred forty-one billion, two hundred thirty million, six hundred forty-one thousand".