31319438541 has 8 divisors (see below), whose sum is σ = 42000635040. Its totient is φ = 20758933872.

The previous prime is 31319438509. The next prime is 31319438573. The reversal of 31319438541 is 14583491313.

It is an interprime number because it is at equal distance from previous prime (31319438509) and next prime (31319438573).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31319438541 - 2⁵ = 31319438509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31319438493 and 31319438502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31319438141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30172351 + ... + 30173388.

It is an arithmetic number, because the mean of its divisors is an integer number (5250079380).

Almost surely, 2^31319438541 is an apocalyptic number.

It is an amenable number.

31319438541 is a deficient number, since it is larger than the sum of its proper divisors (10681196499).

31319438541 is a wasteful number, since it uses less digits than its factorization.

31319438541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60345915.

The product of its digits is 155520, while the sum is 42.

The spelling of 31319438541 in words is "thirty-one billion, three hundred nineteen million, four hundred thirty-eight thousand, five hundred forty-one".