31485511153 has 2 divisors, whose sum is σ = 31485511154. Its totient is φ = 31485511152.

The previous prime is 31485511093. The next prime is 31485511163. The reversal of 31485511153 is 35111558413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31128603489 + 356907664 = 176433^2 + 18892^2 .

It is a cyclic number.

It is not a de Polignac number, because 31485511153 - 2²⁵ = 31451956721 is a prime.

It is not a weakly prime, because it can be changed into another prime (31485511163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15742755576 + 15742755577.

It is an arithmetic number, because the mean of its divisors is an integer number (15742755577).

Almost surely, 2^31485511153 is an apocalyptic number.

It is an amenable number.

31485511153 is a deficient number, since it is larger than the sum of its proper divisors (1).

31485511153 is an equidigital number, since it uses as much as digits as its factorization.

31485511153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 37.

The spelling of 31485511153 in words is "thirty-one billion, four hundred eighty-five million, five hundred eleven thousand, one hundred fifty-three".