31328371801 has 2 divisors, whose sum is σ = 31328371802. Its totient is φ = 31328371800.

The previous prime is 31328371769. The next prime is 31328371831. The reversal of 31328371801 is 10817382313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31101086025 + 227285776 = 176355^2 + 15076^2 .

It is a cyclic number.

It is not a de Polignac number, because 31328371801 - 2⁵ = 31328371769 is a prime.

It is not a weakly prime, because it can be changed into another prime (31328371831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15664185900 + 15664185901.

It is an arithmetic number, because the mean of its divisors is an integer number (15664185901).

Almost surely, 2^31328371801 is an apocalyptic number.

It is an amenable number.

31328371801 is a deficient number, since it is larger than the sum of its proper divisors (1).

31328371801 is an equidigital number, since it uses as much as digits as its factorization.

31328371801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 31328371801 in words is "thirty-one billion, three hundred twenty-eight million, three hundred seventy-one thousand, eight hundred one".