148031631 has 80 divisors (see below), whose sum is σ = 265019040. Its totient is φ = 81285120.

The previous prime is 148031627. The next prime is 148031633. The reversal of 148031631 is 136130841.

It is not a de Polignac number, because 148031631 - 2² = 148031627 is a prime.

It is a super-2 number, since 2×148031631² = 43826727553040322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 148031595 and 148031604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148031633) 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 79 ways as a sum of consecutive naturals, for example, 439095 + ... + 439431.

It is an arithmetic number, because the mean of its divisors is an integer number (3312738).

Almost surely, 2^148031631 is an apocalyptic number.

148031631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

148031631 is a deficient number, since it is larger than the sum of its proper divisors (116987409).

148031631 is a wasteful number, since it uses less digits than its factorization.

148031631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 148031631 is about 12166.8250172344. The cubic root of 148031631 is about 528.9949280236.

The spelling of 148031631 in words is "one hundred forty-eight million, thirty-one thousand, six hundred thirty-one".