31002148 has 12 divisors (see below), whose sum is σ = 57109360. Its totient is φ = 14685192.

The previous prime is 31002121. The next prime is 31002157. The reversal of 31002148 is 84120013.

It is a super-2 number, since 2×31002148² = 1922266361227808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203886 + ... + 204037.

Almost surely, 2^31002148 is an apocalyptic number.

31002148 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

31002148 is a deficient number, since it is larger than the sum of its proper divisors (26107212).

31002148 is a wasteful number, since it uses less digits than its factorization.

31002148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407946 (or 407944 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 31002148 is about 5567.9572555831. The cubic root of 31002148 is about 314.1453206475.

The spelling of 31002148 in words is "thirty-one million, two thousand, one hundred forty-eight".