154140631 has 4 divisors (see below), whose sum is σ = 158306632. Its totient is φ = 149974632.

The previous prime is 154140617. The next prime is 154140647. The reversal of 154140631 is 136041451.

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 154140631 - 2¹³ = 154132439 is a prime.

It is a super-2 number, since 2×154140631² = 47518668250156322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154140596 and 154140605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154140611) 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, 2082945 + ... + 2083018.

It is an arithmetic number, because the mean of its divisors is an integer number (39576658).

Almost surely, 2^154140631 is an apocalyptic number.

154140631 is a deficient number, since it is larger than the sum of its proper divisors (4166001).

154140631 is an equidigital number, since it uses as much as digits as its factorization.

154140631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166000.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 154140631 is about 12415.3385374705. The cubic root of 154140631 is about 536.1739510682.

The spelling of 154140631 in words is "one hundred fifty-four million, one hundred forty thousand, six hundred thirty-one".