31427084139 has 16 divisors (see below), whose sum is σ = 45717243264. Its totient is φ = 19044584000.

The previous prime is 31427084131. The next prime is 31427084147. The reversal of 31427084139 is 93148072413.

It is an interprime number because it is at equal distance from previous prime (31427084131) and next prime (31427084147).

It is a cyclic number.

It is not a de Polignac number, because 31427084139 - 2³ = 31427084131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31427084139.

It is not an unprimeable number, because it can be changed into a prime (31427084131) 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, 276064 + ... + 372914.

It is an arithmetic number, because the mean of its divisors is an integer number (2857327704).

Almost surely, 2^31427084139 is an apocalyptic number.

31427084139 is a deficient number, since it is larger than the sum of its proper divisors (14290159125).

31427084139 is a wasteful number, since it uses less digits than its factorization.

31427084139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106698.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 31427084139 in words is "thirty-one billion, four hundred twenty-seven million, eighty-four thousand, one hundred thirty-nine".