148887431 has 12 divisors (see below), whose sum is σ = 188941320. Its totient is φ = 116015760.

The previous prime is 148887407. The next prime is 148887437. The reversal of 148887431 is 134788841.

It is not a de Polignac number, because 148887431 - 2¹⁰ = 148886407 is a prime.

It is a super-2 number, since 2×148887431² = 44334934219559522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148887437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137576 + ... + 138653.

It is an arithmetic number, because the mean of its divisors is an integer number (15745110).

Almost surely, 2^148887431 is an apocalyptic number.

148887431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

148887431 is a deficient number, since it is larger than the sum of its proper divisors (40053889).

148887431 is a wasteful number, since it uses less digits than its factorization.

148887431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276254 (or 276247 counting only the distinct ones).

The product of its digits is 172032, while the sum is 44.

The square root of 148887431 is about 12201.9437386016. The cubic root of 148887431 is about 530.0123777814.

The spelling of 148887431 in words is "one hundred forty-eight million, eight hundred eighty-seven thousand, four hundred thirty-one".