31354071245 has 24 divisors (see below), whose sum is σ = 44835243768. Its totient is φ = 20975539200.

The previous prime is 31354071223. The next prime is 31354071251. The reversal of 31354071245 is 54217045313.

It can be written as a sum of positive squares in 4 ways, for example, as 763361641 + 30590709604 = 27629^2 + 174902^2 .

It is not a de Polignac number, because 31354071245 - 2¹² = 31354067149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1550636 + ... + 1570725.

It is an arithmetic number, because the mean of its divisors is an integer number (1868135157).

Almost surely, 2^31354071245 is an apocalyptic number.

31354071245 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31354071245 is a deficient number, since it is larger than the sum of its proper divisors (13481172523).

31354071245 is a wasteful number, since it uses less digits than its factorization.

31354071245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121421 (or 3121414 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 31354071245 in words is "thirty-one billion, three hundred fifty-four million, seventy-one thousand, two hundred forty-five".