31425541087 has 2 divisors, whose sum is σ = 31425541088. Its totient is φ = 31425541086.

The previous prime is 31425541001. The next prime is 31425541117. The reversal of 31425541087 is 78014552413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31425541087 - 2¹¹ = 31425539039 is a prime.

It is a super-2 number, since 2×31425541087² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31425941087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15712770543 + 15712770544.

It is an arithmetic number, because the mean of its divisors is an integer number (15712770544).

Almost surely, 2^31425541087 is an apocalyptic number.

31425541087 is a deficient number, since it is larger than the sum of its proper divisors (1).

31425541087 is an equidigital number, since it uses as much as digits as its factorization.

31425541087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 31425541087 in words is "thirty-one billion, four hundred twenty-five million, five hundred forty-one thousand, eighty-seven".