147402631 has 4 divisors (see below), whose sum is σ = 156073392. Its totient is φ = 138731872.

The previous prime is 147402617. The next prime is 147402649. The reversal of 147402631 is 136204741.

147402631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136204741 = 2029 ⋅67129.

It is a cyclic number.

It is not a de Polignac number, because 147402631 - 2¹⁷ = 147271559 is a prime.

It is a super-2 number, since 2×147402631² = 43455071251444322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147402631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147402611) 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, 4335355 + ... + 4335388.

It is an arithmetic number, because the mean of its divisors is an integer number (39018348).

Almost surely, 2^147402631 is an apocalyptic number.

147402631 is a deficient number, since it is larger than the sum of its proper divisors (8670761).

147402631 is an equidigital number, since it uses as much as digits as its factorization.

147402631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8670760.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 147402631 is about 12140.9485214295. The cubic root of 147402631 is about 528.2446149521.

It can be divided in two parts, 14740 and 2631, that added together give a palindrome (17371).

The spelling of 147402631 in words is "one hundred forty-seven million, four hundred two thousand, six hundred thirty-one".