31485498 has 32 divisors (see below), whose sum is σ = 69999552. Its totient is φ = 9360000.

The previous prime is 31485497. The next prime is 31485533. The reversal of 31485498 is 89458413.

It is not an unprimeable number, because it can be changed into a prime (31485497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1003 + ... + 7998.

It is an arithmetic number, because the mean of its divisors is an integer number (2187486).

Almost surely, 2^31485498 is an apocalyptic number.

31485498 is an abundant number, since it is smaller than the sum of its proper divisors (38514054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31485498 is a wasteful number, since it uses less digits than its factorization.

31485498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9070.

The product of its digits is 138240, while the sum is 42.

The square root of 31485498 is about 5611.1939905870. The cubic root of 31485498 is about 315.7695069159.

It can be divided in two parts, 3148 and 5498, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 31485498 in words is "thirty-one million, four hundred eighty-five thousand, four hundred ninety-eight".