31349548779 has 16 divisors (see below), whose sum is σ = 42029644800. Its totient is φ = 20784677760.

The previous prime is 31349548723. The next prime is 31349548793. The reversal of 31349548779 is 97784594313.

It is not a de Polignac number, because 31349548779 - 2⁸ = 31349548523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31349568779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1353859 + ... + 1376819.

It is an arithmetic number, because the mean of its divisors is an integer number (2626852800).

Almost surely, 2^31349548779 is an apocalyptic number.

31349548779 is a deficient number, since it is larger than the sum of its proper divisors (10680096021).

31349548779 is a wasteful number, since it uses less digits than its factorization.

31349548779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25450.

The product of its digits is 22861440, while the sum is 60.

The spelling of 31349548779 in words is "thirty-one billion, three hundred forty-nine million, five hundred forty-eight thousand, seven hundred seventy-nine".