148647631 has 4 divisors (see below), whose sum is σ = 162161064. Its totient is φ = 135134200.

The previous prime is 148647617. The next prime is 148647641. The reversal of 148647631 is 136746841.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 148647631 - 2⁵ = 148647599 is a prime.

It is a super-2 number, since 2×148647631² = 44192236403824322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148647641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6756700 + ... + 6756721.

It is an arithmetic number, because the mean of its divisors is an integer number (40540266).

Almost surely, 2^148647631 is an apocalyptic number.

148647631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

148647631 is a deficient number, since it is larger than the sum of its proper divisors (13513433).

148647631 is a wasteful number, since it uses less digits than its factorization.

148647631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13513432.

The product of its digits is 96768, while the sum is 40.

The square root of 148647631 is about 12192.1134755218. The cubic root of 148647631 is about 529.7276766415.

The spelling of 148647631 in words is "one hundred forty-eight million, six hundred forty-seven thousand, six hundred thirty-one".